Slope is the change in Y over the change in X:
Slope = (2 -0) / (12-4)
Slope = 2/8
Slope = 1/4
Zachary function:
Z(t) = 40 + 20t
Isaac function:
I(t) = 85 + 11t
Graph each function to see the interval of time when one person has more money than the other.
• 69/20
• 3 9/20
-I can’t see the last one but i’m pretty sure those are the only two