Question

Find the slope of a line crossing through the following points (3,9) and (4,5)

Answer 1

Given two points on a line,

`\begin{gathered} (x_1,y_1) \\ \mleft(x_2,y_2\mright) \end{gathered}`

The slope of the line is:

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

Since we have points (3, 9) and (4, 5), we have:

`m=(5-9)/(4-3)=(-4)/(1)=-4`

So, the slope is -4.