Unit 3 Part A Mastery Assessment Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you determine if two ratios are equivalent?

Back

Two ratios are equivalent if they simplify to the same fraction or if their cross products are equal.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities, often represented in the equation y = kx.

Front

How do you find the constant of proportionality from a table?

Back

To find the constant of proportionality from a table, divide the output value by the input value for any pair of corresponding values.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio is constant.

Front

How can you identify a proportional relationship from a graph?

Back

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

Front

What is the formula for calculating a percentage discount?

Back

Percentage discount = (Discount Amount / Original Price) x 100.

Front

How do you calculate the change received after a purchase?

Back

Change = Amount Given - Total Cost.

Front

What is the equation for a linear relationship?

Back

The equation for a linear relationship is typically in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope of a line?

Back

The slope of a line is found by taking the difference in the y-values divided by the difference in the x-values between two points on the line.