10 questions

two points fix a line, not one point. The following is the instruction:

Step 1: Click to enlarge the graph

Step 2: Click “?” on the right hand side, you will find:

Use the graph

When you answer graphing questions, the grapher displays in the player.To enter your answer:

1. Optionally select either Click to enlarge graph or the pop-up icon  to enlarge the grapher.
2. Click or tap in the grapher to open the drawing tools palette.
3. Use the graphing tools to enter your answer.
4. Select Save to submit your graph.

Step 3. You need to draw 3 boundary lines for #10, not just one line.

Step 4. Click “Region Shading Tool” on the right