Question

graph y+9=-1/5(x-20)

Answer 1

Put it into y=mx+b form and you get y=(-1/5)x -5. So, you have a slope of -1/5 and a y-intercept of -5.

Answer 2

to graph it, pick a simple number for x and find the y value. do this again to find a second (x,y) pair. plot both points, and draw a line through both points.
I would use x=0 and find y, and then x= 5, and find y.

Answer 3

>6v1>5v1>6v1