Parallel and Perpendicular lines

Multiple Choice

• If the lines are parallel then the slopes and the y-intercept are the same

• If the lines are parallel then only the slopes are the same

• If the lines are parallel then only the y-intercept are the same

• If the lines are parallel then neither the slopes or the y-intercept are the same

Multiple Choice

In the standard form of an equation

2x + 3y = 7

the number 7 is the

• slope

• x-intercept

• y-intercept

• can not be determined from the equation

Match

Match the following

• m

• b

• ax+ by = c

• y-y₁ = m(x-x₁)

• y = mx + b

Slope

Pendiente

y-intercept

Standard form

Point-slope form

Slope-intercept form

• Slope

  Pendiente

• y-intercept

• Standard form

• Point-slope form

• Slope-intercept form

Multiple Choice

• Colinear lines have the same slope and the same y-intercept

  Las rectas colineales tienen la misma pendiente y el mismo intercepto en y

• Lines are colinear if the lines have the same slope

  Las rectas son colineales si las rectas tienen la misma pendiente

• Lines are colinear if the y-intercepts are the same

  Las rectas son colineales si las intersecciones con el eje y son iguales

• Lines are colinear if the lines are on the same coordinate grid

  Las rectas son colineales si las intersecciones con el eje y son iguales

Multiple Choice

Describe perpendicular lines

• You can always tell if lines are perpendicular because perpendicular lines have slopes with opposite signs only

• You can always tell if lines are perpendicular because perpendicular lines always have the same y-intercept.

• You can always tell if lines are perpendicular because the numerator and denominator of the slopes have reversed and the signs are different

• One can never be too sure if lines are perpendicular even on a coordinate grid

Multiple Choice

• If two lines form 45 degree angles, then the lines must be perpendicular

• If two lines form 180 degree angles, then the lines must be perpendicular

• If two lines form 90 degree angles, then the lines must be perpendicular

• If two lines form 75 degree angles, then the lines must be perpendicular

Multiple Choice

Will parallel lines intersect and will perpendicular lines intersect?

• Parallel lines will never intersect but perpendicular lines will intersect

• Parallel lines will intersect and perpendicular lines will intersect

• Parallel lines will never intersect and perpendicular lines will never intersect

• Parallel lines will intersect but perpendicular lines will never intersect