8th grade Math: 2nd 9 weeks Test

Front

What is the solution to the equation x + 5 = -10?

Back

x = -15

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 is the y-intercept of the line represented by the equation y = 2x + 3?

Back

The y-intercept is 3.

Front

If Julie has 20 pieces of gum and gives away x pieces, how many pieces does she have left?

Back

20 - x

Front

What is the slope of the line represented by the equation y = 3x - 4?

Back

The slope is 3.

Front

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

Back

The line decreases as it moves from left to right.

Front

What is the formula for the slope-intercept form of a line?

Back

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

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.

Front

What is the solution to the equation 2x - 4 = 10?

Back

x = 7.

Front

What does the term 'y-intercept' refer to in a graph?

Back

The y-intercept is the point where the line crosses the y-axis.