Where does the 1/2 come from? Why did that seem especially tempting? What else is up here? What sort of help does this student need?

Thanks to Tina for the submission!

- Post author By mpershan
- Post date July 3, 2013
- 3 Comments on Conics and their Equations

## 3 replies on “Conics and their Equations”

I make that 1/2 sort of mistake all the time: halfway up to the first point marked, which happens to be labeled 2 units.

I’m completely at a loss about how the second line came after the first. I’m also sad that people don’t seem to have the habit of plugging in a point or two in order to check their work.

Even worse than the answer is the problem. It doesn’t state the “curve” is an ellipse, a necessary given.

Meh. If you understand it as “Find an equation that matches this graph” it’s a perfectly fine question.