Unit 3 Proportional Reasoning Review

Front

What is the rate of change in a linear relationship?

Back

The rate of change is the ratio of the change in the dependent variable to the change in the independent variable. It represents the slope of the line.

Front

If a wise financial principle states that no more than 30% of your income should be your rent, what equation can be used to find x, the amount spent on rent if the income is $2,000?

Back

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the variable.

Front

If a gear rotates 6 times every 15 seconds, how many times does it rotate in 1 minute?

Back

The gear rotates 24 times in 1 minute.

Front

What is the unit rate of customers if a store sees 120 customers in 8 hours?

Back

The unit rate is 15 customers per hour.

Front

What does it mean if a slope is not constant?

Back

It means the relationship is non-linear, and the rate of change varies.

Front

How do you find the unit rate from a total quantity and time?

Back

Divide the total quantity by the total time to find the unit rate.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

If a car travels 150 miles in 3 hours, what is the speed in miles per hour?

Back

The speed is 50 miles per hour.

Front

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

Back