Question

Which of the following statements have the same result? Explain each step in solving each one.

I. f(2) when f(x) = 3x + 4
II. f−1(4) when f(x) = 3x - 4 over 5
III. 3y − 6 = y + 10

Answer 1

1). 10 2). 8/5 3). 8

Explanation:

I. f(2) = 3(2) + 4

= 6 + 4

= 10

II. f(4) = 3(4) - 4/5

= 12 - 4/5

= 8/5

III). 3y - 6 = y + 10

2y - 6 = 10

2y = 16

y = 8