Equations in slope-intercept form follow a specific format.
y= mx+ b,
In the above equation, m represents the slope and b the y-intercept of the line. Let's rewrite our equation a little bit so that it more closely resembles this format. This will make it easier to identify its features.
y=4 ⇔ y= 0x+ 4
We see above that the slope is 0 and the y-intercept is 4.