How does this graph change between point d and point g?

a the graph increases.

b the graph decreases.

c the graph increases, then decreases.

dthe graph remains constant.

Step-by-step explanation:

The graph increases because it rises from point D to G.

Option: a is the correct answer.

      a.    The graph increases.

Clearly after looking at the graph we see that as we move from Point D to Point G the graph of the function increases.

i..e the curve has a positive slope or positive rate of change at each point between them.

This means that the graph increases continuously from Point D to point G.

          Hence, option: a is the correct answer.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

it would open into a square depending on the type of envelope i’m not sure about the second part