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

1 Answer
Feb 16, 2017

Answer:

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

Explanation:

to graph #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 -> y = -2(0) + 4 -> y = 4#
#(0,4)#

let #x = 1 -> y = -2(1) + 4 -> y = 2#
#(1, 2)#

let #x = 2 -> y = -2(2) + 4 -> y = 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]}