Is Y=5 and Y=-1 consider parallel perpendicular or neither show your work please and asap

  parallel

Step-by-step explanation:

The "work" is to recognize that both equations describe horizontal lines. All horizontal lines on the Cartesian coordinate grid are parallel.

Additional comment

  y = constant . . . . . a horizontal line (y=0 is the x-axis)

  x = constant . . . . . a vertical line (x=0 is the y-axis)

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If you wanted to go to the trouble, you could compare the equation ...

  y = constant

to the slope-intercept form ...

  y = mx +b

Your comparison would note that m=0. That is, the slope is zero, so the line is horizontal. All lines with the same (zero) slope are parallel.