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#

Desmos

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:

Desmos

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