How do you graph y = -2x + 4 by plotting points?

Feb 16, 2017

choose x-values to find the y-values to get coordinates to graph
graph

Explanation:

to graph $y = - 2 x + 4$ you need to choose x-values to input to the equation to find y which gives you coordinates to graph

it doesn't matter what x-values you choose but most people would pick values like 0, 1, -1 just because its easier and simpler

let $x = 0 \to y = - 2 \left(0\right) + 4 \to y = 4$
$\left(0 , 4\right)$

let $x = 1 \to y = - 2 \left(1\right) + 4 \to y = 2$
$\left(1 , 2\right)$

let $x = 2 \to y = - 2 \left(2\right) + 4 \to y = 0$
$\left(2 , 0\right)$

so choose x-values to find the y-values to get coordinates to graph
graph{y = -2x + 4 [-10, 10, -5, 5]}