The line graph shows the amount of money Sam spent from January to June.

1. Of the amount Sam spent in February, $174 was spent on food and the remaining amount was spent on transport. How much did he spend on transport in February?
2. In which month did Sam spend $100 more than the previous month? Give your answer in this format. (Eg Jan)

(a)
Amount that Sam spent in February = $440

Amount that Sam spent on transport
= 440 - 174
= $266

(b)
To find an increase in a line graph, look for an increasing slope. 

The 3 increasing slopes are from January to February, February to March and May to June. Now, find the month when Sam spent $100 more than the previous month.

Amount that Sam spent in January = $140
Amount that Sam spent in February = $440

Amount that Sam spent in February more than January
= 440 - 140
= $300 (x)

Amount that Sam spent in February = $440
Amount that Sam spent in March = $540

Amount that Sam spent in March more than February
= 540 - 440
= $100 (✓)

Amount that Sam spent in May = $120
Amount that Sam spent in June = $260

Amount that Sam spent in June more than May
= 260 - 120
= $140 (x)

The month that Sam spent $100 more than the previous month = Mar

Answer(s): (a) $266; (b) Mar