Math 8 Unit 4 - Test Review

Front

What is the total earnings from selling 27 loaves of bread if each loaf is sold for $6?

Back

$162

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph.

Front

Complete the ordered pair so the point is a solution to the equation y = 3x + 7. ( , 19)

Back

(4, 19)

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1)

Front

What condition must be true for a system of equations to have one solution?

Back

The slopes of the lines must be different.

Front

What is the slope of the line represented by the equation y = 7/5x + 3?

Back

7/5

Front

What does it mean if two lines are parallel in terms of their slopes?

Back

If two lines are parallel, their slopes are equal.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept is the value of y when x = 0, represented by b.

Front

How can you determine if a table of values represents a linear relationship?

Back

If the differences between the y-values divided by the differences between the x-values are constant, it represents a linear relationship.

Front

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

Back

m = (y2 - y1) / (x2 - x1)