### Home > CCA2 > Chapter 9 > Lesson 9.3.1 > Problem9-78

9-78.
1. John has to graph a set of parabolas of the form y = x2 − 4x + 2n where n is an integer and 0 ≤ n ≤ 6. What is the probability that one of these parabolas, chosen at random, will have: 9-78 HW eTool (Desmos). Homework Help ✎

1. One x-intercept?

2. Two x-intercepts?

3. No x-intercepts?