Answer:
y=5x-2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(3-8)/(1-2)
m=-5/-1
m=5
y-y1=m(x-x1)
y-8=5(x-2)
y-8=5x-10
y=5x-10+8
y = 5x - 2
Slope m = (y2-y1)/(x2-x1)
Using (2, 8) and (1, 3)
m = (3 - 8)/(1 - 2) = -5/-1 = 5
Slope-intercept: y = mx + b
y = 5x + b
Using (2,8)
8 = 5(2) + b
8 = 10 + b
b = -2
then y = 5x - 2
I think the answer is -25
39.9km a day
Add up the four kilometers cycled and you should get 159.6km cycled in total. Divide that number by 4 to get 39.9km as a result. So she's wrong.
non linear
