Parabolas

- 1. Which of the equations below is a quadratic function?
A) f(x)=5 B) f(x)=7x C) f(x)=2x ^{2}+3x-12D) f(x)=2x-4 - 2. When you graph a quadratic function, its shape is called a _____.
A) line B) parabola C) triangle - 3. Simplify the following expression by multiplying. (x+2)(2x-5)
A) 2x ^{2} - 5x - 10B) 2x ^{2} - x - 10C) 2x ^{2} + x - 10D) 2x ^{2} - x + 10- 4. What is the y-intercept?
A) -4 B) 4 C) 10 - 5. What is the maximum value?
A) 1 B) 9 C) 10 - 6. What true about this graph?
A) the vertex is both a minimum and maximum B) The vertex is a maximum C) The vertex is a minimum - 7. What are the x-interecepts of the graph?
A) -1 and -4 B) 0 and 3 C) -1 and 4 - 8. What is the maximum value of the parabola?
A) -3 B) 8 C) 3 - 9. What is the minimum value?
A) 4 B) 7 C) 3 - 10. Use your graphing calculator to find the vertex of f(x)=x
^{2}+4x+3?
A) (2, -1 B) (-2, -1) C) (-3, -1) D) (-1, -2) |

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