Graphs Answers

1. a. 90 km
b. 3 hours
c. 90 km in 2 hours = 45 km/h

2. a. June
b. 400 + 800 + 700 = 1900 containers
c. October

3. a. 30%, 50%, 60% and 70%
b. 15 hours
c. In general, the more time spent revising, the better the test result.

4. a. (5, 7)
b. (0, 2)
c. (3, 5)
d. (0, 2)
e. (8, 10)

5. a. y = x + 3
x
0
1
2
3
4
5
6
y
3
4
5
6
7
8
9
5. b. y = 2x − 1
x
0
1
2
3
4
5
6
y
-1
1
3
5
7
9
11