5 x 3 = 15 and 5 x -2k = -10k so B
Answer:
D. Both a relation & a function.
Step-by-step explanation:
A relation is a set of one or more ordered pairs. A function is a relation in which each input has exactly one output. A set of ordered pairs represents a function if, for every value of x, there is only one value of y. In the given situation, the x-coordinate is the number of weeks since she starts recording and the y-coordinate is the number of books read per week. It can be seen from the given set that each x-value corresponds with exactly one y-value. Therefore, the set of ordered pairs is best described as both a relation and a function.
Answer: 2
Step-by-step explanation:
Look at the attachment
The answer is an expression because you can not solve for x.
Answer:
-13/400
Step-by-step explanation:
The pertinent formula is
change in f(x) over [a, b] f(8) - f(0)
a. r. of change = --------------------------------------- = ----------------
change in x over [a, b] 8 - 0
Continuing these calculations, we get:
2(8) - 2 2(0) - 2 14/8 -2/8
(1/8) -------------- - (1/8) ------------- = ----------- - -----------
5(8) - 6 5(0) - 6 40 - 6 -6
7/4 1/4
This simplifies to average rate of change = ------- - --------
34 6
7 1
= ------------- - ---------- = -13/400
136 24