Question

A car travels at a constant speed, as shown on the double number line. How far does the car travel in 14 hours? Explain your reasoning.

Answer 1

From the double number line

When

Time = 0 hour, Distance = 0km

When

Time = 1 hour, Distance = 70km

When

Time = 2 hours, Distance = 140km

From these values, we can deduce that

$D=70T$

Therefore, when

T = 14 hours

$D=70(14)$

This gives

$D=980\operatorname{km}$

Therefore,

The distance covered in 14 hours is 980 km