Open Up Math 8 Unit 3 Mid Unit Assessment Review

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope (m) represent in a linear equation?

Back

The slope represents the rate of change of y with respect to x.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What does 'b' represent in the equation y = mx + b?

Back

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

Front

If a line has a slope of -2, what does this indicate about the line?

Back

The line decreases as x increases, indicating a negative relationship.

Front

What is the y-intercept of the line represented by the equation y = 5x + 5?

Back

The y-intercept is 5.

Front

How can you determine if a point (x, y) lies on the line represented by an equation?

Back

Substitute the x value into the equation and see if the resulting y value matches.

Front

What is the significance of the x-intercept in a linear equation?

Back

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

Front

How do you find the y-intercept from two points on a line?

Back

Use the slope to find the equation and then solve for y when x = 0.

Front

What is the relationship between parallel lines in terms of slope?

Back

Parallel lines have the same slope.