Given:
The given points are (1,8) and ( -3,12).
Required:
We need to find the slope of the line that passes through (1,8) and (-3,12).
Explanation:
Consider the sope formula.
[tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex][tex]Substitute\text{ }y_2=12,y_1=8,x_2=-3,\text{ and }x_1=1\text{ in the formula,}[/tex][tex]Slope=\frac{12-8}{-3-1}[/tex][tex]Slope=\frac{4}{-4}[/tex][tex]Slope=-1[/tex]Final answer:
The slope of the line is -1 that passes through (1,8) and (-3,12).