Gr8 Math STAAR Review

Front

What is a proportional relationship?

Back

A proportional relationship is one in which two quantities maintain a constant ratio. For example, if y = kx, where k is a constant, then y is proportional to x.

Front

What is a nonproportional relationship?

Back

A nonproportional relationship is one where the ratio between two quantities is not constant. For example, in the equation y = 5x + 8, the relationship is nonproportional because of the constant term.

Front

What is the formula for scale factor?

Back

Front

What does a positive slope indicate?

Back

A positive slope indicates that as one variable increases, the other variable also increases. It represents a direct relationship.

Front

What does a negative slope indicate?

Back

A negative slope indicates that as one variable increases, the other variable decreases. It represents an inverse relationship.

Front

How do you find the y-intercept of a linear equation?

Back

The y-intercept can be found by setting x = 0 in the equation and solving for y.

Front

What is the y-intercept of the line represented by y = 5x + 8?

Back

The y-intercept is 8, as it is the value of y when x = 0.

Front

What is the difference between a proportional and a nonproportional relationship?

Back

In a proportional relationship, the ratio between the two quantities is constant, while in a nonproportional relationship, the ratio changes.

Front

If a gymnast burns 15 calories per minute, how is this relationship classified?

Back

This relationship is classified as proportional because the calories burned are directly proportional to the time spent.

Front

What is the slope of the line represented by y = 5x + 8?

Back

The slope of the line is 5.