Slate worked for Lone Star Gas Company, Goodfellow Air Force Base, and was employed with Livestock Weekly for more than twenty years. Slate was a member of the Optimist Wives Club and has been an active volunteer for the First Baptist Church. She also is a member of the Daughters of American Revolution and Daughters of Republic of Texas. Slate has served twice on the ASU Self-Study Committee, reviewing accreditation of the university every ten years. Slate served on the ASU Alumni Association Board of Directors from 1986 to 1998.