Name:________________________________________Date:___________________________Period:_______
Algebra 2
Section 4-1/4-2 Day 2
Quadratic Functions
Consider the parabolas listed at the right. Answer the following questions.
1.
Which parabola is the thinnest? _______________
A. y 
1 2
x  3x  1
2
2. Which parabola is the widest? _______________
B. y  x 2  5x  4
3. Which two parabolas have the same y-intercept? _______________
C. y  4 x 2  2 x  3
4. Which two parabolas have the same width? _______________
D. y  2 x 2  x  1
5. Which parabola(s) open up? _______________
E. y   x 2  7 x  6
6. Which parabola(s) open down? _______________
Give the specified information and Graph the parabola on the coordinate plane provided.
7. y   x 2  2 x  3
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
8. y  x 2  4 x  3
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
Give the specified information and Graph the parabola on the coordinate plane provided.
9. y  2x 2
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
10. y 
1 2
x  2x
2
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
11. y  2 x 2  4
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
Give the specified information and Graph the parabola on the coordinate plane provided.
12. y   x 2  2 x  1
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________
13. y  2 x 2  4 x  3
Vertex: ___________________
Axis of Symmetry: ________________
y-intercept: ________________
Opens up/down? ___________