Gr. 7 Open Up Unit 4: Proportional Relationships and Percentages

Front

What makes a graph proportional?

Back

A proportional graph is a straight line that passes through the origin (0,0).

Front

In the equation y = 14x, what is the constant of proportionality?

Back

The constant of proportionality is 14.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio between two proportional quantities, which remains constant.

Front

What is the constant of proportionality in the equation y = 15x?

Back

The constant of proportionality is 15.

Front

How much would you pay for an $18 T-shirt that is 20% off?

Back

You would pay $14.40.

Front

What is 20% of 50?

Back

20% of 50 is 10.

Front

If a recipe requires 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

What is the formula to find the percentage of a number?

Back

The formula is (part/whole) x 100.

Front

If a car travels 60 miles in 1 hour, what is its speed in miles per hour?

Back

The speed is 60 miles per hour.

Front

What does it mean for two quantities to be proportional?

Back

Two quantities are proportional if they maintain a constant ratio.