Determine wheather the graphs of y=2x+1 and y=-1/2x-7 are parallel, perpendicular, coincident, or none of these. PLEASE HELP ASAP!!!! will mark brainlest.

Determine wheather the graphs of y2x1 and y12x7 are parallel perpendicular coincident or none of these PLEASE HELP ASAP will mark brainlest class=