Review for Unit 1: Part 1 Test - Graphing

Front

What is the equation of a horizontal line?

Back

y = c, where c is a constant.

Front

What is the x-intercept of a linear equation?

Back

The x-intercept is the point where the line crosses the x-axis, represented as (x, 0).

Front

What is the slope of a line?

Back

The slope (m) is the ratio of the rise (change in y) over the run (change in x) between two points on the line.

Front

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

Back

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

Front

What does it mean for a point to be a solution to a linear equation?

Back

A point (x, y) is a solution if it satisfies the equation when substituted for x and y.

Front

What is the slope-intercept form of a linear equation?

Back

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

Front

How do you find the y-intercept of a linear equation?

Back

Set x = 0 in the equation and solve for y.

Front

What is the standard form of a linear equation?

Back

Ax + By = C, where A, B, and C are constants.

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the steepness and direction of the line; positive slope means the line rises, negative means it falls.

Front

How do you determine if two lines are parallel?

Back

Two lines are parallel if they have the same slope.