Question

Help I don’t understand

Answer 1

The slope of a line between two points $(x_1, y_1)$ and $(x_2, y_2)$ is given by $\frac{y_2 - y_1}{x_2 - x_1}$. You can think of this as either rise/run or change in y divided by change in x.

Here, the slope is $\frac{6-4}{2-1}$, which is equal to 2.