### Home > A2C > Chapter 10 > Lesson 10.2.4 > Problem 10-109

10-109.

John has to graph a set of parabolas of the form

*y*=*x*^{2}− 4*x*+ 2where^{n}*n*is an integer and 0 ≤*n*≤ 6. What is the probability that one of these parabolas, chosen at random, will have: Homework Help ✎One

*x*-intercept?Two

*x*-intercepts?No

*x*-intercepts?

For the following, test the possible equations on your calculator or on graph paper.

What is the value of *n*?

What are the values of *n*?

What are the values of *n*?