# How do you graph 8x-5y=80?

May 27, 2017

$\text{see explanation}$

#### Explanation:

$\text{one way is to find the intercepts and draw a }$
$\text{straight line through them}$

$\textcolor{b l u e}{\text{to find the intercepts}}$

• " let x = 0, in the equation for y-intercept"

• " let y = 0, in the equation for x-intercept"

$x = 0 \to 0 - 5 y = 80 \Rightarrow y = - 16 \leftarrow \textcolor{red}{\text{ y-intercept}}$

$y = 0 \to 8 x - 0 = 80 \Rightarrow x = 10 \leftarrow \textcolor{red}{\text{ x-intercept}}$

$\text{plot these 2 points and draw a straight line through them}$

graph{8/5x-16 [-40, 40, -20, 20]}