# What do the variables "m" and "b" represent?

The slope intercept formula is, $y = m x + b$
where $m$ is the slope
where $b$ is the $y$-intercept
The slope is the change in y over the change in x. This is commonly known as the $\frac{r i s e}{r u n}$. This is also shown as the $\frac{\Delta y}{\Delta x}$. If you have any 2 points on the line than you can also use the formula $\frac{{y}_{2} - {y}_{1}}{{x}_{2} - {x}_{1}}$.
The y-intercept is where the line touches or intersects the $y$-axis. If the $x$ coordinate is zero you can find out what the y-intercept is.