Question

Graph the linear by finding intercepts if possible.
4x+5y= 20

Answer 1

http://www.wolframalpha.com/input/?i=4x%2B5y%3D+20

Answer 2

4x+5y= 20

5y = 20 -4x
y = 4 -(4/5)x
y-intercept has coordinates (0,4)
To get the x-intercept, y has to be 0.
5(0) = 20 - 4x
0 = 20 -4x
-20 = -4x
5 = x
x-intercept has coordinate (5,0)

Plot (5,0) and ((0,4) and the two points (intercepts) will determine the line.