I believe the answer to this is D. 67.5 yd^2
Answer:
Step-by-step explanation:
As x increases four units from -4 to 0, y decreases four units from 0 to -4
slope m = Δy/Δx = -4/4 = -1
The y intercept is at (0, -4) so b = -4
y = -1x + -4
y = - x - 4
as m is negative, slope is negative
In one month, there are on average 30 days.
So if he talks 135 minutes per month, he talks on average 135/30 minutes per day
135/30 = 4.5
So on average he talks to his grandfather for 4 minutes and 30 seconds a day.
The answer should be y=x-2. To solve other questions like these, find the y-intercept on the y-axis and use rise over run to count the slope between the points. Here it rises 3 and runs 3, simplifying to one. The y-axis crosses at -2. Plug this into y=mx+b and you get y=x-2
