Question

What is the slope of the line passing through `(1,-1); (4,7)`?

Answer 1

`8/3`

Explanation:

Slope `m` of a line passing through two points `A(x_1,y_1)` and `B(x_2,y_2)` is given by

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

Here let `A=(1,-1) and B=(4,7)`

`implies m=(7-(-1))/(4-1)=(7+1)/3=8/3`

`implies` slope of the line passing through the given points is `8/3`.