Midterm Review

Front

What is the solution to the equation -15 = 5a + 12 - 2a + 6?

Back

a = -11

Front

What is the solution to the equation -14a + 20 = 14a - 8?

Back

a = 1

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). For points (6,7) and (4,2), m = (2 - 7) / (4 - 6) = 5/2.

Tags

CCSS.8.EE.B.5

Front

What does it mean for two lines to be parallel?

Back

Parallel lines never intersect because they have the same slope.

Tags

CCSS.HSG.CO.A.1

Front

What is the slope of a line that is vertical?

Back

The slope of a vertical line is undefined.

Tags

CCSS.8.EE.B.5

Front

What is the slope of a line that is horizontal?

Back

The slope of a horizontal line is 0.

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept of a line?

Back

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

Front

What is the difference between a linear equation and a linear inequality?

Back

A linear equation represents a straight line, while a linear inequality represents a region of the coordinate plane.

Tags

CCSS.HSA.REI.D.12

Front

How do you graph a linear inequality?

Back

1. Graph the corresponding linear equation. 2. Use a dashed line for < or >, and a solid line for ≤ or ≥. 3. Shade the appropriate region.

Tags

CCSS.HSA.REI.D.12

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.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3