What equation has an x intercept of (-4,0) and y intercept of (0,9)

In the linear format of y=ax+b, b is the y-intercept hence it is 9.

y=ax+9

Then insert (-4,0) which would then be

0=-4a+9

-9=-4a

9/4=a

Thus the answer is y=9/4x+9 which can also be described as 9/4x-y=-9