9.5 STAAR Review Linear Key Features

Front

What is a linear function?

Back

Front

What does the slope of a line represent?

Back

The slope of a line represents the rate of change of y with respect to x. It indicates how much y changes for a unit change in x.

Front

What is the y-intercept of a linear function?

Back

Front

How do you find the x-intercept of a linear function?

Back

Front

What does an x-intercept of -5 indicate?

Back

An x-intercept of -5 indicates that the line crosses the x-axis at the point (-5, 0). This means that when y is 0, x is -5.

Front

What is the rate of change in a linear function?

Back

The rate of change in a linear function is the same as the slope. It indicates how much the dependent variable (y) changes for a unit change in the independent variable (x).

Front

What does a slope of zero indicate about a line?

Back

A slope of zero indicates that the line is horizontal. This means that there is no change in y as x changes.

Front

What is the equation of a horizontal line that passes through the point (a, b)?

Back

Front

What is the significance of the x-intercept in a real-world context?

Back

In a real-world context, the x-intercept often represents a point where a certain condition is met, such as the number of payments made to fully repay a loan.

Front

How do you interpret the x-intercept in the context of a loan repayment graph?

Back

The x-intercept in a loan repayment graph represents the number of monthly payments needed to repay the loan completely.