Answers

Question 1 (5 points)

(a) Could Table 3.1 below represent a linear function? If so why?

(b) Write a possible formula for the function shown in the table below.

Table 3.1

x	2	4	6	8	10
f(x)	160	130	100	70	40

.

Ans.: (a) Yes, constant slope of -15 throughout the entire function

(b) f(x) = -15x + 190

Question 2 (5 points) Write a possible formula for the function show below:

Slope m = 1.5 and y-intercept is 3 Since seems linear or a look like a straight line, then f(x) = 1.5x + 3 or (y - 3) = 1.5x or y = 1.5(x + 2)