Question

What is the graph line for this problem?
x+3y=9

Answer 1

$x+3y=9\ \ \ \Rightarrow\ \ \ 3y=-x+9\ \ \ \Rightarrow\ \ \ y=- \frac{1}{3} x+3\\\\x=0\ \ \ \Rightarrow\ \ \ y=- \frac{1}{3} \cdot0+3=0\ \ \ \Rightarrow\ \ \ point:\ (0;3)\\\\y=0\ \ \ \Rightarrow\ \ \ x+3\cdot0=9\ \ \ \Rightarrow\ \ \ x=9\ \ \ \Rightarrow\ \ \ point:\ (9,0)$