Concept explainers
To tell which discriminant of equations is positive, negative or zero
Answer to Problem 1CA
The answer is as follows.
Explanation of Solution
Given information:
Calculation:
It is known,
If
If
If
Number of intercepts are the number of solutions of a
For
There is no x -intercept, it means the solutions are imaginary. Hence, the determinant is negative.
For
There is 1 x -intercept, it means there is 1 solution. Hence, the determinant is 0.
For
There are 2 x -intercepts, it means the solutions are real. Hence, the determinant is positive.
For
There is 1 x -intercept, it means there is 1 solution. Hence, the determinant is 0.
Chapter 9 Solutions
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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