Question

7. What is the slope of the line that passes through the pair of points (3, 8) and (9, 5) ? (1 point)

Answer 1

7. D
8. D
9. D
10.C

for 7 & 8 you use the equation
$\frac{y2 - y1}{x2 - x1}$
your points are (3,8) & (9,5)

so you plug the numbers in
y2= 5
y1=8

x2=9
x1=3
you subtract them get a fraction and that is your slope


9 & 10
use the equation
$y - y1 = m(x - x1)$
plug you numbers in for y1 and x2 m is your slope plug it in and that is your equation

Answer 2

7. (D). -1/2
8. (D). -22/6
10. (D). y-2=3(x+5)
11. (C). y+2=-1/2(x+4)