Parallel and Perpendicular lines

slope

x-intercept

y-intercept

can not be determined from the equation

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

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

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

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