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Maths Exercices

Find the constant of variation: word problems

Peter walked a total of 12 kilometres by making 2 trips to school. Later on, he walked 18 kilometres during 3 trips. How many kilometres does Reid walk per trip?

Create a chart.

To find the constant of variation, divide "Total distance walked (kilometres)" by "Number of trips".

The constant of variation is 6.



      The voltage (in volts) measured across a resistor is directly proportional to the current (in amperes) flowing through the resistor. If 8 volts is measured across a resistor carrying a current of 2 amperes, and 36 volts is measured across a resistor carrying a current of 9 amperes, what is the constant of variation (resistance in ohms)?




Solution: