Graphing Linear Equations

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

• y = mx + b

• y = mx - b

• y = ax + b

• y = mx^2 + b

How do you find the slope of a line given two points?

• slope = (y2 - y1) / (x2 - x1)

• slope = (y1 - y2) / (x1 - x2)

• slope = (x2 - x1) / (y2 - y1)

• slope = (x1 - x2) / (y1 - y2)

What is the equation of a horizontal line?

• y = mx + b

• y = mx

• y = c

• y = x

What is the equation of a vertical line?

• x = c

• y = mx

• y = c

• y = mx + b

When are two lines considered parallel?

• Two lines are considered parallel if they intersect and have the same slope.

• Two lines are considered parallel if they intersect and have different slopes.

• Two lines are considered parallel if they never intersect and have different slopes.

• Two lines are considered parallel if they never intersect and have the same slope.

When are two lines considered perpendicular?

• Two lines are considered perpendicular when the angle between them is 90 degrees.

• Two lines are considered perpendicular when the angle between them is 180 degrees.

• Two lines are considered perpendicular when the angle between them is 45 degrees.

• Two lines are considered perpendicular when they intersect at a right angle.

What is the slope-intercept form of the equation of a line parallel to y = 2x + 3?

• y = 2x + 4

• y = 2x + b

• y = 2x - 3

• y = 3x + 2

What is the slope-intercept form of the equation of a line perpendicular to y = -3x + 4?

• y = -x + b

• y = 3x + b

• y = (1/3)x + b

• y = -3x + b

Graph the line with the equation y = 2x - 1.

• The graph of the line with the equation y = 2x - 1 is a straight line that passes through the points (0, -1) and (1, 1).

• The graph of the line with the equation y = 2x - 1 is a vertical line.

• The graph of the line with the equation y = 2x - 1 is a circle.

• The graph of the line with the equation y = 2x - 1 is a parabola.

Graph the line with the equation x = 4.

• Diagonal line

• Vertical line

• Horizontal line

• Curved line