# How do you find the slope and y intercept of y = 4x + 4?

May 16, 2018

The y intercept is the value of $y$ where the function you're plotting crosses the $y$ axis, so if we set $x = 0$ in the equation we can see we get $y = 4$.
The slope represents the change in $y$ for a unit change in $x$, and might also be called the gradient of a line. It gives us a measure of how steep the line is. We can see changing $x$ will give a change in $y$ which is 4 times as big, because the $x$ term is multiplied by 4, so the slope is +4.