Question

3) Which function is linear?

A) f(x) = 17x] + 2
B)f(x) = 1/7x+ 2
C)f(x) = 7x- 2
D) f(x) = (17x) - 2

Answer 1

B) and C)

Explanation:

A) f(x) = |7x| + 2 NO because we have absolute value of 7x

B) f(x)=17x + 2 YES, slope = 17 and y-intercept = 2

C) f(x) = 7x - 2 YES, slope = 7 and y-intercept = -2

D) f(x) = |7x| - 2 NO because we have absolute value of 7x