Is there a way to handle a formula question with multiple answers?

For example, a ball is tossed up and the student is asked to calculate the time when the ball is in a particular position. This is solved through a quadratic equation and there are two answers: the time up and the time down.

In this case, the question could be rearranged to ask what is the time up OR what is the time down? However, what if the question couldn't be rearranged. What are the options? How are teachers getting around this situation? Are teachers rewriting the question or is there an approach being used that someone is will to share?

Layne,

Currently, the only way I can think of to handle this is to be specific in your question. We do this with spring problems in differential equations.

What is the first time the object passes through the position 10 cm?

What is the first time the object passes through the position 10 cm on its way downward?

If the question cannot be rearranged, then you still have to rearrange the question because Canvas doesn't support multiple answers.

What is the lesser of the two values?

What is the greater of the two values?

You could ask for a non-answer.

What is the product of the two answers?

What is the sum of the two answers?

Those aren't always good, because if you know the shortcut you don't actually have to work out the answers. In ax²+bx+c=0, the product is c/a and the sum is -b/a.

I have gotten fancy with the question itself sometimes and used an if() function to determine the correct answer. I'm writing this using Classic Quizzes notation.

When you preview it, you get

There's probably a clearer way to word the statement about which answer to give, I've just demonstrating what can be done.