Question

What is the slope of the line between (-1, 5) and (2, 3 )?

Answer 1

`-2/3`

Explanation:

The slope of a line `(m)` is given by the equation:

`m=(y_2-y_1)/(x_2-x_1)`

• `(x_1,y_1)` are the first coordinates

• `(x_2,y_2)` are the second coordinates

It doesn't matter which values do you choose for `x_1` or `x_2`, just remember to match them with their corresponding partners of `y_1` and `y_2`, respectively.

So here, the slope will be,

`m=(3-5)/(2-(-1))`

`=-2/3`

Even if we switch the first and second coordinates around, it still works:

`m=(5-3)/(-1-2)`

`=2/-3`

`=-2/3`