Free previewCourses

Linear functions (tables)

Question 1 of 3

Know the idea

The table shows four values of

x

and their corresponding values of

f(x)

for the linear function

f

What is the value of

f(23)

Worked example

Each time

x

increases by

3, f(x)

changes by

-6

, so the slope is

-2

. Using

(2, -3)

f(x) = -2x + 1

, so

f(23) = -45

Video walkthrough

Use the existing worked examples and practice while this walkthrough is being prepared.

The table shows four values of

x

and their corresponding values of

f(x)

for the linear function

f

What is the value of

f(17)