Question

Task 2 given the table and graph, evaluate the following functions:

Answer 1

• 1) -12, 2) 22, 3) 9, 4) 31, 5) 4, 6) 3, 7) 5

Explanation:

Use table for f(x) related questions and equation for g(x) related questions and both for the last one.

Q1

• g(0) = 3*0 - 12 = 0 - 12 = - 12

Q2

• f(0) = 22, the value of f(x) against the x = 0

Q3

• g(7) = 3*7 - 12 = 21 - 12 = 9

Q4

• f(-3) = 31, the value of f(x) against the x = -3

Q5

• g(x) = 0 ⇒ 3x - 12 = 0 ⇒ 3x = 12 ⇒ x = 4

Q6

• f(x) = - 3, x = 3, the value of x against the f(x) = - 3

Q7

• f(g(6)) = f(3*6 - 12) = f(18 - 12) = f(6) = 5, the value of f(x) against x = 6