Selected Answers

Question 13

• 13(a) 80 litres
• 13(b) Time cannot be negative
• 13(c) 4 litres/minute
• 13(d) 20 minutes

Question 6

• 6(c)(i) $y$-intercept = 2
• 6(c)(i) It means that we will spend $2 at the bowling alley if we didn’t rent any time on the lanes
• 6(d) Slope = 6
• 6(e) $y=6x+2$.
• 6(f) $32.

Extra question

John walks for 20 minutes to reach the train station, and then takes a train for 10 minutes to his workplace. He stays at his workplace for 30 minutes and returns home on a taxi which takes 15 minutes.

Draw a graph representing this scenario.