Question

help pls im in the middle of a test

Answer 1

Answer:

5200 feet above sea level

Step-by-step explanation:

We can determine the slope of the incline by taking the difference in feet above sea level and dividing it by the difference in miles:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{6400-5600}{6-2}=\frac{800}{4}=200$

So, the road gains elevation at a rate of 200 feet per mile. To figure out at what elevation the road starts at, we set up the equation $5600=200(2)+b$ after substituting one of the given points $(2,5600)$ and solve for $b$, which tells us that information:

$5600=400+b$

$5200=b$

Therefore, the elevation of the road at the point where the road begins is 5200 feet above sea level.