ACOS 8.EE.B.5 Flashcard

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 quantity is constant.

Front

Which color car represents a proportional relationship?

Back

White car

Front

How do you find the slope of a line?

Back

The slope of a line is found by calculating the change in y over the change in x (rise over run).

Front

What is the slope of a horizontal line?

Back

0

Front

What is the unit rate in a proportional relationship?

Back

The unit rate is the ratio of two measurements in which the second measurement is 1. For example, 60 miles/1 hour.

Front

Given the points (4, 10) and (8, 9), what are y1 and y2?

Back

y1 = 10; y2 = 9

Front

What does 'rise over run' mean in the context of slope?

Back

'Rise over run' refers to the vertical change (rise) divided by the horizontal change (run) between two points on a line.

Front

What is the formula for calculating slope?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are two points on the line.

Front

What does a slope of -1 indicate?

Back

A slope of -1 indicates that for every unit increase in x, y decreases by 1 unit, resulting in a downward slant.

Front

What is the significance of a slope of undefined?

Back

An undefined slope indicates a vertical line where the change in x is 0, making the slope calculation impossible.