Chapter 3 Test Review

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

Which line shows a proportional relationship between x and y?

Back

Line L shows a proportional relationship.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise over run).

Front

Write the equation of a line with a slope of -5/4 and a y-intercept of 2.

Back

Front

What is the y-intercept in a linear equation?

Back

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

Front

Write an equation that represents the length y of a boa constrictor that is x years old, given it is 18 inches long at birth and grows 8 inches per year.

Back

Front

What is the equation of a line with a slope of 2 and a y-intercept of -5?

Back

Front

How do you find the slope between two points?

Back

The slope is found using the formula: slope = (y2 - y1) / (x2 - x1).

Front

Find the slope of the line through the points (8,5) and (-9,5).

Back

The slope is Zero, since the y-coordinates are the same.

Front

What does a slope of zero indicate about a line?

Back

A slope of zero indicates that the line is horizontal.