Answer:
the correct answer is c. -4
Step-by-step explanation:
For given points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex], we can calculate the slope of the line that passes through these points using the formula
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Plug in [tex](x_1,y_1)=(6,-10)[/tex] and [tex](x_2,y_2)=(8,-18)[/tex] to the formula
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m=\dfrac{-18-(-10)}{8-6}[/tex]
[tex]m=\dfrac{-18+10}{2}[/tex]
[tex]m=\dfrac{-8}{2}[/tex]
[tex]m=\boxed{-4}[/tex]
Therefore, the correct answer is c. -4
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