Mathematics: The graph shows a proportional relationship. what is the constant proportionality?

The graph shows a proportional relationship.

Ответ:

jakhunter354

11.12.2020

Step-by-step explanation:

We have been given that a lorry is travelling a 13.5 m/s along a stretch of road where the speed limit is 50 km/h.

Let us convert speed of lorry into km/h. Since 1 hour equals 3600 seconds, so we will multiply 13.5 by 3600 to find the distance traveled by lorry in 1 hour

$\text{Distance traveled by lorry in 1 hour}=(13.5\times 3600) \text{meters}}$

$\text{Distance traveled by lorry in 1 hour}=48600 \text{meters}}$

1 km = 1000 meters

So to convert speed of lorry into km/h we will divide distance covered by lorry in 1 hour by 1000.

$\text{Speed of lorry}=\frac{48600\text{ meters}}{\text{hour}}\times\frac{1 \text{km}}{1000\text{ meters}}$

$\text{Speed of lorry}=\frac{48.6\text{km}}{\text{hour}}$

Since lorry's speed is 48.6 km/h which is less than speed limit of 50 km/h, therefore, we can say that the lorry is traveling below the speed limit.

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The graph shows a proportional relationship. what is the constant proportionality?

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