Question

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

Answer 1

See below.

Explanation:

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

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:

Answer 2

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

Explanation:

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

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