Math is just numbers. Most of math is made up of the following numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Ten (10) is also a number but it's a combination of 0 and 1.
There is such a thing as negative numbers but zero is not one of them. A list of negative numbers: -1, -2, -3, -4, -5, -6, -7, -8, -9. In between there exists decimals, these look like number.number (ergo 1.1) but I don't want to write about that.
If you draw a line and mark one end of the bar -9 and the other end 9, and somewhere in the middle you marked then you have created an axis. If you draw a vertical line across zero then you've created a 2-axis graph. Americans call the horizontal axis "x" and the vertical axis "y," you can too. On this graph you can mark relationships between "x" and "y" numbers. These relationships can be linear ( the change is consistent between "x" and "y"), exponential ( "y" changes significantly more than "x"), Logrithmic ( when "y" is magnitudes bigger than "x"), polynomial (when "y" gets curvy).