Parallel and Perpedicular Lines

y-intercept

"b" stands for what?

slope

"m" stands for what?

opposite reciprocals

Fill in the blank: two lines that are perpendicular have slopes that are ___________ of each other.

parallel

Fill in the blank: two lines that have the same slope are called __________ lines.

-5

In the equation y = 2x - 5, what is the y-intercept?

y - y1 = m(x - x1)

Point-slope form

y = 3x + 8

Rewrite y - 2 = 3(x + 2) into slope-intercept form.

y = mx + b

Slope-intercept form

false

True or false: the slopes of two perpendicular lines can be 2 and -2.

-3/4

What is the slope of 3x + 4y = 8?

-5

What is the slope of a line parallel to y + 2 = -5(x - 5)

3

What is the slope of a line parallel to 9x - 3y = 12

4

What is the slope of a line parallel to y = 4x + 8?

4

What is the slope of a line perpendicular to 2x + 8y = 16?

-1/3

What is the slope of a line perpendicular to y - 5 = 3(x + 0.5)?

2

What is the slope of a line perpendicular to y = -1/2x + 3?

y = 8x - 12

Write the equation of a line parallel to y - 5 = 8(x + 3) that passes thru the poing (2, 4).

y = -3/4x + 9

Write the equation of a line parallel to 3x + 4y = 18 that passes thru the point (8, 3).

y = 2x - 5

Write the equation of a line parallel to y = 2x + 12 that passes thru the point (0, -5)

y = -4x + 13

Write the equation of a line perpendicular to x - 4y = 10 that passes thru (-2, 5).

y = -1/2x - 5

Write the equation of a line perpendicular to y = 2x - 12 that passes thru the point (0, -5)

x = 2

Write the equation of a line perpendicular to y = 6 that passes thru the point (2, 1)