What is true about the slope of the line segment between points G and H and the slope of the line segment between points H and I? Refer to the graph below.

The slopes have different signs.
The slopes are the same because the small triangle and the large triangle are similar.
The slopes are different because the triangles are different sizes.
It is not possible to determine the slopes from the graph.

The slopes have different signs.

It is not possible to determine the slopes from the graph.