With these 3 question, 50 points for brainliest. the last question is optional but i'll only give brainliest to the person who answers them all and gets them all correct

Slope = ( 7+2)/(0 - 8) = -9/8
b = 7
equation
y = -9/8 x + 7


(-2,0)(0,-2)
slope = (0 +2)/(-2 - 0) = -1

y = -2x
x = 0 y = 0
x = 1 y = -2
x = -1 =  2

use these 3 coordinate points to graph it

24 is the correct answer.