Question

A. Find the slope of the line that passes through these points.

Answer 1

slope formula :  $\bold{ \sf \dfrac{y_2-y_1}{x_2-x_1}}$

a.                          coordinates : (3,12) and (4,16)

$\sf \rightarrow \dfrac{16-12}{4-3}$

$\sf \rightarrow \dfrac{4}{1}$

$\sf \rightarrow 4$

b.                          coordinates : (1,4) and (3,12)

$\sf \rightarrow \dfrac{12-4}{3-1}$

$\sf \rightarrow \dfrac{8}{2}$

$\sf \rightarrow 4$

⇒ A. Yes. Both slopes are equal to 4