Answer to Question #56097 in Algebra for Bobby Bass

Question

1: Which of the following functions is quadratic ?
A: f(x) = 2^2
B: f(x) = 3(4 – x)
C: f(x) = 5/x-1
D: f(x) = 7x(x + 3)

2: None

3: What is the value of the y-coordinate of the y-intercept of the function shown below?
f(x) = -3x^2 +5x – 4

Answer: ______

4: What is the value of the x-coordinate of the vertex of the function shown below.?
f(x) = (x + 6)(x – 2)

Answer ___

5: In which direction does the graph of the function shown below open?
f(x) = -2x^2 -5x – 4

A: Up
B: Down
C: Left
D: Right

6: Which of the quadratic functions listed is written in intercept form?

A: Y = (x + 1)(x – 5)
B: Y – 4 = - 3(x – 5)
C: Y = 2x^2 + 3x – 5
D: Y – 7 = -2(x + 3)^2


7: Which of the following are the x-intercepts on the graph of the function shown below? f(x) = 2(x + 1)(x – 2)

Choose all answers that are correct.

-1

-2

2

-4