Answer:
-2,0
Step-by-step explanation:
the function intercepts the y axis there
Simplest way would be to find out how many painting more it would be 80 from 20. It is four times more drawings. Now since you know it is 4x more then you can simply multiply 4 time 4 (4*4) because it would be the weeks it takes him by the times it would be. It would be 16 weeks in total.
See attachment for your Answer.
Y=40x+70
40 being the slope and 70 being the y intercept.
If you need help comment below!
Subtract 9 from each side of the equation. so you would get 1<x. meaning that any number larger then 1 would correctly solve the equation.
