Writing equations of Lines-Parallel and Perpendicular

• y-intercept

• measurement

• slope

• nothing

• y-intercept

• nothing

• slope

• base

Slopes of parallel lines are...

• opposite reciprocals

• the same

• opposites

• always 7

Slopes of perpendicular lines are...

• opposite reciprocals

• the same

• opposite

• always 7

• 3

• 4

• 3x

• 4x

• the same line

• perpendicular

• neither

• parallel

• Parallel

• Perpendicular

• Neither

Are these lines parallel?
y = 12x + 4
y = 12x +14

• YES
• NO

Are these lines parallel?

y = (-1/2)x + 1

y = (1/2)x - 5

• YES

• NO

Are these lines perpendicular?
y = 4x + 2
y = (-1/4)x + 12

• YES
• NO