Buzz: Questions & Answers

Is there a way to input an answer with a wildcard so Buzz would accept anything for that portion?

For example say I want my students to write an equation in slope-intercept form. I make the equation worth 2 points with the option for partial credit. I would use a fill-in question set to math-exact. The answer space would look like this:

y = ______________

I would like to enter an alternate answer for partial credit if the student had the slope correct, but an incorrect y-intercept. I'm thinking something like:

4x-* where Buzz would accept any value for the asterisk.