Y = 1 Using y = mx + c. Compare to y = 1, y = 0x + 1 , We can see that the slope m = 0 and the vertical intercept, c = 1. For the line perpendicular to y = 1 Condition for perpendicularity m₁m₂ = -1 m₁ = 0, m₂ = ? 0*m₂ = -1 m₂ = -1/0 = Negative Infinite or Infinite Slope of line perpendicular to y = 1, is = Infinite.
