Horizontal and Vertical lines

horizontal

(3, -6) and (2, -6) are what kind of line? y repeats

vertical

(6, 8) and (6, -4) are what kind of line? x repeats

horizontal

Lines parallel to the x axis

vertical

Lines parallel to the y axis

horizontal

Straight lines that go across left to right

vertical

Straight lines that go up and down

vertical

___________ lines are written as x = a number x= 5 or x=-4

horizontal

______________ lines are written as y= a number y= 8 or y= -4

vertical

______________ lines have undefined slope

horizontal

_________________ lines have zero slope

vertical

lines perpendicular to the x axis

horizontal

lines perpendicular to the y axis

horizontal

slope of zero and passes through (0, 8)

vertical

undefined slope and passes through (5,0)