The answer is 20x^18 which is the last option.
(2,-2)(5,7)
7-(-2)= 9
5-2= 3
9/3= 3
slope = 3
(you could also calculate the slope by just counting up how many units it goes up/down when you pick a point from the x-axis and move left/right. basically counting the rise over run)
I hope this helps you
?=10×10
?=100
I would start at making it more easy by asking my dad or mom for help
