Two airplanes, flying at the same altitude, are tracked using the same coordinate system on a radar screen...?

Two airplanes, flying at the same altitude, are tracked using the same coordinate system on a radar screen. One plane is following a path described by the equation y = 0.4x - 2 and the other is following a path described by the equation 2x = 5y + 7. Is there a possibility of a collision?