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Algebra 1

1.15.4 Using Direct Variation to Solve Application Problems, Part 2

Algebra 11.15.4 Using Direct Variation to Solve Application Problems, Part 2
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Jesse’s car gets 30 miles per gallon of gas.

1.

Write an equation using direct variation for distance, dd, and number of gallons of gas, gg for this problem.

2.

If Jesse travels 150 miles he uses 5 gallons of gas. Find the constant of variation.

3.

Now, write the equation if Jesse travels dd miles with a car that uses 30 miles per gallon of gas.

4.

If Las Vegas is 285 miles away, how many gallons of gas are needed to get there?

Why Should I Care?

A woman and a young girl smile while holding a piggy bank together, as seen on a tablet screen held by a hand. The background includes a kitchen with warm lighting and a brick wall.

Alex's mother can use algebra to budget her paycheck from her job as an accountant. She uses some money for food, rent, medicine, and things like water and electricity.

If she uses variables to represent the different ways that she uses her money, she can put those variables into an equation to make sure she has enough money to pay for all those things.

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