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

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Answer 1 · 2017-02-16T06:22:52

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

to graph $y = - 2 x + 4$ $y = -2x + 4$ 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 $x = 0 \to y = - 2 (0) + 4 \to y = 4$ $x = 0 -> y = -2(0) + 4 -> y = 4$
$(0, 4)$ $(0,4)$

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

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

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

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