Without graphing (PLEASE DO IT IF NEEDED THIS IS JUST A PRACTICE PROBLEM) tell whether the slope of a line that model s the linear relationship is positive, negative, zero, or undefined. Then find the slope.

Question

A babysitter earns $8 for 1h and $40 for 5h.

A. The slope of the relationship is zero.❌
B. The slope of the relationship is positive. ✅
C. The slope of the relationship is negative.❌
D. The slope of the relationship is undefined.❌

Find the slope. (Part two of the question.)

The slope is ___

Answer 1

you have two points of the form (time, earnings),
(1,8), and (5,40)

as the time increases, the earnings increase, so the slope must be positive
(you had that, good!)

slope = (40-8)/(5-1) = 32/4 = 8 dollars/hour