1
2
3
4
5
Ch 7 Test
­­ Standard Form of a Quadratic Eq.
­­ Find axis of symmetry and vertex
­­ Graph a quadratic equation/inequality
­­ Quadratic formula
­­ Discriminant
­­ Solving eq. by taking square root
6
Review Questions
1. State standard form of a quadratic equation.
7
2. Put these in order from the one with the narrowest
graph to the one with the widest graph.
y = x2
y = 1/3x2
y = - 4x2
8
3. How does the graph of y = x2 - 7 differ from the graph
of y = x2?
9
4. Find the axis of symmetry for y = x2 - 6x + 5
10
5. Find the vertex of y = x2 - 6x + 5.
11
6. Find the y intercept of y = x2 - 6x + 5
12
7. Graph y = x2 - 6x + 5
13
8. Make a quick sketch of the inequality y < - x2.
14
9. Make a quick sketch of the inequality y > x2 + 3 .
15
10. Find the solution(s) for the following graphs.
16
11. Solve the equation.
x2 = 100
17
12. Solve the equation.
2x2 ­ 32 = 0
18
13. Solve the equation.
5x2 + 2 = 30
19
14. Solve x2 ­ 2x = 8 using the quadratic formula.
20
15. Use the discriminant to determine how many
solutions the equation x2 - 6x + 9 = 0 has.
b2 ­ 4ac
21
22
STUDY­­USE QUIZZES!!
23