Math 8: Unit 3 Review

Front

What does the slope of a line represent in a graph?

Back

The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x). A steeper slope indicates a greater rate of change.

Front

How do you determine who is earning more money per hour from a graph?

Back

You compare the slopes of the lines representing each person's earnings. The person with the steeper line is earning more money per hour.

Front

If a bag of chips costs $0.50, how many bags can you buy with $5?

Back

You can buy 10 bags of chips, calculated as $5 ÷ $0.50 = 10.

Front

Back

The y-intercept is -5, which is the value of y when x = 0.

Front

Back

The slope is -1, which indicates that for every unit increase in x, y decreases by 1.

Front

What does a steeper line on a graph indicate about a person's bank account growth?

Back

A steeper line indicates that the person is earning money at a faster rate.

Front

What is the meaning of the term 'y-intercept'?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is 0.

Front

Back

The slope (m) is the coefficient of x in the equation.

Front

If Aliyah's line starts higher than James's line on a graph, what does that indicate?

Back

It indicates that Aliyah started with more money than James.

Front

What is the formula to calculate the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).