Question

15 $(-4, -8); (-2, 0)$
16 $(-3, -3); (0, 0)$
17 $(2, 5); (9, 1)$
18 $(0, 0); (-2, 7)$

Explanation:

Assuming the task is to calculate the slope between each pair of points using the slope formula $m=\frac{y_2-y_1}{x_2-x_1}$
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Problem 15

Step1: Identify coordinates

$x_1=-4, y_1=-8; x_2=-2, y_2=0$

Step2: Substitute into slope formula

$m=\frac{0-(-8)}{-2-(-4)}=\frac{8}{2}$

Step3: Simplify the fraction

$m=4$

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Problem 16

Step1: Identify coordinates

$x_1=-3, y_1=-3; x_2=0, y_2=0$

Step2: Substitute into slope formula

$m=\frac{0-(-3)}{0-(-3)}=\frac{3}{3}$

Step3: Simplify the fraction

$m=1$

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Problem 17

Step1: Identify coordinates

$x_1=2, y_1=5; x_2=9, y_2=1$

Step2: Substitute into slope formula

$m=\frac{1-5}{9-2}=\frac{-4}{7}$

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Problem 18

Step1: Identify coordinates

$x_1=0, y_1=0; x_2=-2, y_2=7$

Step2: Substitute into slope formula

$m=\frac{7-0}{-2-0}=-\frac{7}{2}$

Answer:

1. $4$
2. $1$
3. $\frac{-4}{7}$
4. $-\frac{7}{2}$