Review the graph of f(x). On a coordinate plane, a horizontal line goes from (negative 5, 8) to (5, 8).

Pre-calc
What is the difference quotient of f(x)?

StartFraction 1 Over h Endfraction, h ≠ 0
StartFraction 8 Over h EndFraction, h ≠ 0
0, h ≠ 0
8, h ≠ 0

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.