Algebra 1
2 marks · EasyThe table below shows the value of for different values of .
| y | t |
|---|---|
| 0 | |
| 5 |
(a)[1 mark]
Work out the value of t when y = 0.
(b)[1 mark]
Work out the value of t when y = 5.
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(a) -1
(b) 14
Common mistakes: Multiplying before subtracting for b.; Incorrect substitution for a.
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Marking points
B1 (a) · 1 mark · Correct value for t when y = 0: -1
B1 (b) · 1 mark · Correct value for t when y = 5: 14
Worked solution
a) When y = 0, t = 3 \times 0 - 1 = 0 - 1 = -1.
b) When y = 5, t = 3 \times 5 - 1 = 15 - 1 = 14.