Question

The cost of a telephone call is made up of a fixed connection fee and an additional cost per minute, as shown on the graph below.

a) What is the cost of the connection fee?
b) What is the cost per minute?
If your answers are decimals, give them to 1 d.p.

Answer 1

a) 80 pence

b) 6 pence

Explanation:

The connection fee is the y intercept of the graph

The cost per minute is the slope of the graph