Which equation represents a line which is parallel to the y-axis? Answer y=x+2 y=-1 x=-2y x=-2

The equation that represents a line which is parallel to the y-axis is $x=-2$. This is because a line parallel to the y-axis is a, and the equation of a vertical line is in the form of $x=k$, where k is the x-coordinate of any point on the line. In this case, the line is $x=-2$, which means it is a vertical line passing through the point (-2,0).