Question

Explain how to graph x + 3y = 9 using the x- and y-intercepts method.

Answer 1

for the x-intercept, take y=0
x+3y=9
x+3(0)=9
x+0=9
x=9, so x-intercept will be at (9,0)
for y-intercept, take x=0
x+3y=9
0+3y=9
3y=9
y=9/3
y=3, so y-intercept will be at (0,3)
put of them in grap and joining both points