7th - Proportionality & Percents Fall 2024 Semester Review

Front

What is the formula to calculate percent increase?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100

Front

If a price increases from $50 to $70, what is the percent increase?

Back

40%

Front

Back

1/2

Front

How do you determine if a relationship is proportional?

Back

A relationship is proportional if the ratio of y to x is constant.

Front

If a table shows values (1, 3), (2, 6), (3, 9), what is the constant of proportionality?

Back

3

Front

What is the equation for a proportional relationship with a constant of 9?

Back

y = 9x

Front

What does the constant of proportionality represent in a linear equation?

Back

It represents the rate at which y changes with respect to x.

Front

If y = kx, what does k represent?

Back

k is the constant of proportionality.

Front

How do you express a proportional relationship in equation form?

Back

y = kx, where k is the constant of proportionality.

Front

What is the constant of proportionality if y = 15x?

Back

15