OPINION
¶ 1 Appellant Charles Vincent Wagner, Jr. petitions this court to review the court of appeals’ opinion affirming his convictions and sentences for first degree murder and attempted armed robbery. We have jurisdiction pursuant to Arizona Constitution article 6, section 5(3) and Arizona Revised Statutes (A.R.S.) § 12-120.24. For the following reasons, we affirm the judgment of the trial court and vacate in part the opinion of the court of appeals.
I.
¶2 In June 1994, appellant and three other teenagers went to a Smitty’s grocery store in Gilbert with the intent to steal a purse or an automobile. Appellant, armed with a .380 semi-automatic pistol, noticed the victim unloading groceries into her ear. As the victim pushed her shopping cart to the cart return area, appellant signaled to his cohorts that he was going to rob her. Appellant then approached the victim’s car as she sat inside, pulled the driver’s door open, and struck her. When the victim screamed, appellant shot her several times. The victim exited her car, called for help, then collapsed and died in the parking lot.
¶ 3 Appellant was later apprehended and charged as a juvenile. The juvenile court transferred appellant for trial in adult court on charges of first degree murder and attempted armed robbery. Appellant’s first trial ended in a mistrial after the jury deadlocked. At appellant’s second trial, the jury convicted appellant on both counts. The state sought the death penalty on the first degree murder charge, and the trial court held a sentencing hearing during which the court made findings regarding aggravating and mitigating factors. After weighing those factors, the trial court declined to impose the death penalty, and instead sentenced appellant to life imprisonment without the possibility of parole on the first degree murder charge, and to a consecutive seven and one-half year term on the attempted armed robbery charge.
II.
¶ 4 Appellant appealed his convictions and sentences to the court of appeals. Appellant argued that A.R.S. § 13-703.A 1 violated his constitutional rights to due process and equal protection. The law is void for vagueness, appellant asserted, because it does not provide sentencing guidelines for a judge to use in deciding whether to impose a life or a natural life sentence and therefore permits arbitrary enforcement of the law. The lack of guidelines, he argued, denies equal protection because it can result in disparate treatment of similarly situated defendants. Appellant also contended that the Eighth Amendment 2 requirement that courts employ sentencing guidelines in capital cases should apply to life sentences as well. Finally, appellant maintained that the trial court improperly admitted autopsy photographs of the victim.
¶ 5 In resolving appellant’s constitutional challenges, the court of appeals, citing
United States v. Wivell,
¶ 6 The court of appeals then considered whether appellant had a due process right to sentencing guidelines. In deciding this issue, the court applied the three part balancing test of
Mathews v. Eldridge,
First, the private interest that will be affected by the official action; second, the risk of an erroneous deprivation of such interest through the procedures used, and the probable value, if any, of additional or substitute procedural safeguards; and finally, the Government’s interest, including the function involved and the fiscal and administrative burdens that the additional or substitute procedural requirement would entail.
Mathews,
¶ 7 The court of appeals, relying on
Britton v. Rogers,
¶8 The court of appeals summarily rejected appellant’s claim that the Eighth Amendment requirement that courts provide sentencing guidelines for capital cases also applies to life sentences, on the ground that the Supreme Court had already rejected such a challenge.
See Harmelin v. Michigan,
¶ 9 Finally, the court of appeals held that the trial court did not err in admitting autopsy photographs of the victim because their marginally prejudicial effect did not outweigh their probative value.
See State v. Murray,
III.
¶ 10 We granted review to determine whether A.R.S. § 13-703.A, the statute under which the trial court imposed appellant’s natural life sentence, violates a defendant’s due process and equal protection rights under the federal constitution. 3 We agree with the trial court and the court of appeals that Arizona’s sentencing scheme does not violate appellant’s rights to due process and equal protection of the law. We vacate in part the opinion of the court of appeals because the court of appeals incorrectly held that the sentencing function of a judge is not subject to analysis under the vagueness doctrine, and improperly applied the balancing test set forth in Mathews to criminal sentencing. 4
A.
¶ 11 A statute is void for vagueness if it fails to give “the person of ordinary intelligence a reasonable opportunity to know what is prohibited, so that he [or she] may act accordingly.”
Grayned v. City of Rockford,
B.
¶ 12 The court of appeals, relying on
Britton v. Rogers,
¶ 13 In
Britton,
the district court applied
Mathews
to the context of criminal sentencing, and granted a writ of habeas corpus to an Arkansas state prison inmate who challenged his conviction for first degree rape and subsequent sentence of life imprisonment.
¶ 14 The Britton court first noted that Mathews “was initially developed for use in the administrative context.” Id. at 580. The court also acknowledged that no other federal court had previously applied Mathews to criminal sentencing procedures. Id. Nevertheless, the court perceived “no doctrinal obstacle to extending [Mathews ]” to the issue of criminal sentencing guidelines. Id. at 580. The court viewed Mathews “as a useful specification of factors to be considered in any case raising procedural due process questions,” and accepted the lower court’s invitation to evaluate Arkansas’ criminal sentencing procedures under the rubric of Mathews. Id.
¶ 15 We do not agree that
Mathews
should be extended, and hold that the balancing test set forth in
Mathews
does not provide the correct standard to evaluate constitutional challenges to criminal sentencing procedures. Simply put, the
Mathews
test, by its own language, applies to challenges involving the constitutionality of civil administrative proceedings. As the Supreme Court wrote in
Mathews,
the “resolution of the issue whether the
administrative procedures
provided [in a given case] are constitutionally sufficient requires analysis of the governmental and private interests that are affected.”
¶ 16 Our holding that the
Mathews
approach does not apply to constitutional challenges to criminal sentencing procedures does not alter the outcome in this matter. Because appellant has no constitutional right to sentencing guidelines in a non-capital proceeding, the lack of guidelines for imposing a sentence of life or natural life does not violate appellant’s right to due process or equal protection under the law.
See Harmelin,
IV.
¶ 17 For the foregoing reasons, we affirm the judgment of the trial court, and vacate in part and approve in part the opinion of the court of appeals.
Notes
. A.R.S. section 13-703.A states that a person convicted of first degree murder "shall suffer death or imprisonment ... for life, without possibility of release on any basis until the completion of the service of twenty-five calendar years if the victim was fifteen or more years of age and thirty-five years if the victim was under fifteen years of age....”
. See U.S. Const. amend VIII.
. Appellant also challenges his sentences under the Due Process and Equal Protection Clauses of the Arizona Constitution, but because he offers no separate analysis of these provisions, we decline to address them here.
See Forum Dev., L.C. v. Arizona Dep’t of Revenue,
. With respect to appellant’s Eighth Amendment challenge and the issue of the admission of autopsy photographs, we approve the opinion of the court of appeals.
