MA-229

Gradient

Lower Sec Maths · Secondary 1 · Hard · Gradient

The distance

y

metres of a cyclist from a checkpoint after

x

minutes is modelled by

y=80x+40

for

0\le x\le 5

. What is the gradient of this graph, and what does it represent?

80, meaning the cyclist moves 80 m further from the checkpoint each minute
40, meaning the cyclist starts 40 m from the checkpoint
5, meaning the cyclist takes 5 minutes to reach the checkpoint
80, meaning the cyclist moves 80 km each minute

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