Question

(2,2) and (4,0)

What is the y-intercept of the graph? The slope is -1.

Answer 1

4

Explanation:

y=mx+b m= slope b= y-intercept

substitute the known values and a coordinate

(x,y) so you can use (2,2) or (4,0) to solve for b

(2,2)

2= (-1) (2) +b

2= -2 +b

4=b

or

(4,0)

0=(-1) (4) +b

0= -4 +b

4=b

either way, the y-intercept should be 4