Question

help please @Euler271

Answer 1

from the equation: y = x - 9 you can deduce which it is by plugging in strategic points.

for example: y = 0 ---> true when x = 9, so you expect the point (x, y) = (9, 0) to be on the graph.

and now for: x = 0 --> true when y = 9. so (0, 9) should be there too.

the only one that has both those points is D

Answer 2

You know the slope is 1 and it crosses the Y axis at -9.