Question

How do you graph `y=4`?

Answer 1

It's a horizontal line parallel to the x-axis 4 units up

Explanation:

Given: `y = 4`
It's a horizontal line parallel to the x-axis 4 units up.

Graph of `y = 0x + 4`:

graph{0x+4 [-10, 10, -2, 6]}

Answer 2

`y=4` is a horizontal line that runs through the point on the `y` axis where the value is 4 and it is parallel to the `x` axis. Every set of coordinates on the line will be in the form `(x,y)` and as the `x` value changes the `y` value will be 4

E.g. (1,4). (7,4). (-2,4) (0,4)