Question

If you know two points on a line, how can you find the rate of change of the variables being graphed?

Answer 1

The rate of change refers to the rate at which the independent variable is changing as the dependent variable changes. You will find the independent variable on the y-axis and the dependent variable on the x-axis.
Then, pick two points.You will sub them into the equation.
$rate of change = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$