# SOLUTION: I have to determine whether the graphs of the equation are perpendicular, parallel, or neither. 4x+4y=-4 and 4x-4y=0. I put perpendicular, is this correct?

Algebra ->  Algebra  -> Coordinate-system -> SOLUTION: I have to determine whether the graphs of the equation are perpendicular, parallel, or neither. 4x+4y=-4 and 4x-4y=0. I put perpendicular, is this correct?      Log On

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 Question 84821: I have to determine whether the graphs of the equation are perpendicular, parallel, or neither. 4x+4y=-4 and 4x-4y=0. I put perpendicular, is this correct?Answer by tanimachatterjee(60)   (Show Source): You can put this solution on YOUR website!equations are 4x+4y =-4.....................(1) and 4x-4y=0...........(2) so we can write the equation (1) as 4y = -4x -4 or y = -x -1 so the slope is -1 (2) we can write as 4y = 4x or y=x slope =1 product of these 2 slope is (-1)(1) = -1 so they r perpendicular to each other and your ans is ABSOLUTELY correct