Question

Help please

1. Which function is exponential? Write the function
(Exponential form is y=a(b)^x)
2.Which function is linear? Write the function
( linear y=mx+b)

Answer 1

Easy way to distinguish:

• Linear function forms a AP and exponential function forms a GP

We see f(x) is series of:

• 8, 14, 20, 26, 32

• This is a AP with common difference of 6 and the first term of 8

g(x) is series of:

• 4, 12, 36, 108, 324
• This is a GP with common ratio of 3 and the first term of 4

1. g(x) is exponential function:

• g(x) =4*3ˣ

2. f(x) is linear function:

• f(x) = 6x + 8