Topic 11 Graphs (11.1 - 11.4)

The cost of hiring a car is a fixed fee of $25 plus $45 per day.

Write a function to show the cost in dollars, a of hiring a car for n days.

Roy visited his aunt and then returned home.

The distance-time graph shows information about Royʼs journey.

Give the time that Roy started his journey.

( _ . __ pm)

Roy visited his aunt and then returned home.

The distance-time graph shows information about Royʼs journey.

Give the time that Roy reached his aunt's house.

( _ . __ pm)

Roy visited his aunt and then returned home.

The distance-time graph shows information about Royʼs journey.

How long, in minutes, does Roy take to reach home from his aunt's house?

(_ minutes)

Roy visited his aunt and then returned home.

The distance-time graph shows information about Royʼs journey.

Which statement below is not correct?

• He stopped at a rest stop before headed to his aunt's house.

• His travelled slower in his first 55km journey than when he returned home from his aunt's house.

• The total time that he has stopped moving is 50 minutes.

• His total distance travelled is 140 km.

There are 108 litres of water in a tank. 9 litres flow out of the tank every hour.

There are L litres of water in the tank after h hours.

Write a function.

The cost of booking a room for a meeting is a fixed charge plus an amount for each person.

The cost is $c for n people and c = 15n + 40.

Find the fixed charge and amount per person.

(fixed charge , amount per person)

A linear equation has a function y = 29x + 17

Give the gradient and y-intercept of this linear equation.

(gradient , y-intercept)

A linear equation has a function y = -16x -10

Give the gradient and y-intercept of this linear equation.

(gradient , y-intercept)

A linear equation has a function y = 95x - 115

Find the coordinate when x = 0.5

(x , y)