She paid $3.28 per gallon.
24.60 divided by 7.5 equals 3.28.
Take two points
(-3, -1) and (1,2)
Find slope
slope formula: m = y2 - y1 / x2 - x1
m = 2 - (-1) / 1 - (-3) = 2 + 1 / 1 + 3 = 3/4
Substitute one of the points into slope intercept form (y =mx + b) to find the y intercept.
y= mx + b
2 = 3/4(1) + b
2 = 3/4 + b
1.25 = b
So:
y = 3/4x + 1.25
Answer number 2, contradiction
bvcdrtStep-by-step explanation:
You need to take the data, and you need to have his income recorded as a rise early on. Then you need to peak the data at an early-mid point and then demonstrate that his income is decreasing steadily.