1 Hand eye co-ordination can help your child to catch a ball and hit a ball with a bat.  Handwriting: Visual-motor integration, which is a vital skill for handwriting, grows out of a good hand-eye co-ordination base. The eyes need to guide the hand in forming the letters and making sure they stay within the lines.
The horizontal axis of a graph is also known as the x axis. Typically, the horizontal axis describes a quantity that changes in a predictable fashion. In the case of a scientific experiment, the horizontal axis usually denotes the control variable. This variable is deliberately controlled by the experimenter in order to determine the effects that change has on other variables.
The axis of symmetry is the line y = 0, which is also the x-axis. If you were asked if this graph is symmetric about either axis, you would say, Yes; about the x-axis. If you were asked for the axis of symmetry of the (sideways) parabola, you would say, the line y = 0.