Solve-Real roots-Intersections

- 1. Solve x
^{2}– 3x – 4 = 0
A) x = 4, x = -1 B) no solution C) x = -4, x = 1 D) x = ±1 - 2. What are the real roots of y = x
^{2}– 3x – 4?
A) (x – 1) and (x + 1) B) (x + 4) and (x - 1) C) no real roots D) (x – 4) and (x + 1) - 3. How many times does x
^{2}– 3x – 4 = y intersect the x-axis?
A) 3 B) 0 C) 1 D) 2 - 4. Solve x
^{2}+ 6x + 9 = 0
A) no solution B) x = 3 C) x = 3 and x = -3 D) x = -3 - 5. What are the real roots of y = x
^{2}+ 6x + 9?
A) (x – 3) and (x + 3) B) (x – 3) C) no real roots D) (x + 3) - 6. How many times does x
^{2}+ 6x + 9 = y intersect the x-axis?
A) 3 B) 0 C) 2 D) 1 - 7. Solve x
^{2}+ 4 = 0
A) x = ±2 B) x = -2 C) no solution D) x = 2 - 8. What are the real roots of y = x
^{2}+ 4?
A) (x – 2) and (x + 2) B) (x + 2) C) (x - 2) D) no real roots - 9. How many times does x
^{2}+ 4 = y intersect the x-axis?
A) 1 B) 0 C) 3 D) 2 - 10. When I ask you for the real roots of a quadratic function, I am asking you to
A) solve B) find the line of symmetry C) graph D) find the y-intercept - 11. Which way does y=–5x
^{2}+3x–7 open?
A) down B) to the left C) to the right D) up - 12. Which way does y = 2 + 3x – 4x
^{2}open?
A) down B) to the left C) to the right D) up |

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