The height of the giraffes is discribed with a linear graph. This means that their height grows at a steady rate, for every month that passes they'll grow a little. To find the moment at which the height of the giraffe 2 is greater than the height of the giraffe 1, we need to look at the graph. The graph has two axis, the horizontal axis and the vertical axis. The horizontal axis has the age of the giraffes, while the vertical one has their heights, we need to find the month at which the line for the giraffe 2 is above the line for the giraffe 1. This happens at 8 months.