Line c is parallel to d. line f is parallel to g. line f is perpendicular to c. all lines are in the same plane. what other line must line f be perpendicular to?

You can solve this problem by looking at the slopes: lines c and d will have the same slope , because they are parallel. Similarly, lines f and g will have the same slope , because they are parallel.

Now, if f and c are perpendicular, is means that

So, the complete scenario is the following:

gregory's graph is incorrect because it shows 2 inches of growth for each week when it should show 0.75 inches of growth each week.

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.