Question

Need help on this please

Answer 1

TLDR: 1 is 3, 2 is 5, 3 is 8.

Luckily for you, question 1 and 2 are linear functions. You don’t have to do any extra calculations to find the rate of change, because it’s always consistent. Question 1 is 3, and question 2 is 5.

Question 3 involves the evaluation of a quadratic, so we have to do a little bit of math. Plug in the two endpoints of the interval into the equation to obtain their y-coordinate values; we’ll use these points to calculate the slope.

(1,3) and (3, 19)

Now, using the slope formula:

M=y2-y1 = 19-3 = 16=8
x2-x1 3-1 2

The slope for Question 3 is 8.