How do you graph y=-2 ? and how do you graph y=-x+4 ?

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Answer 1 · 2018-05-28T13:05:57

See below.

So graphing $y=-2$ would be that you would draw a line on the y axis that go horizontal or straight of $y=-2$

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For $y=-x+4$ , you would want to find the y-intercept which is $y=4$ when you plug 0 in for x. So we have 1 coordinate point.

So let plug in 1 for x.

$y=-(1)+4$
$y=-1+4$ ----> Distributing the negative sign to the 1
$y=3$ ------> Added $-1+4$ together

So we have another coordinate point which is $(1, 3)$

The graph for $y=-x+4$ should look something like this:

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Answer 2 · 2018-05-28T13:10:14

I use the free online graphing calculator, Desmos. Desmos allows you to graph multiple polar equations or Cartesian equations in various colors.

When I enter $y= -2$ , I obtain the following graph:

www.desmos.com/calculator

When I enter $y=-x+4$ , I obtain the following graph:

www.desmos.com/calculator