Question

1. Which of these shows the graph for the quadratic function

y = x2 + x – 6?

(Points : 1)











Question 2. 2. Where is the vertex of the parabola?

y = x2 + 2x + 1

(Points : 1)
Above the x-axis
Below the x-axis
On the x-axis
On the y-axis

Question 3. 3. Use the discriminant to determine how many x-intercepts the graph of the equation has.

y = – 4x2 + 3x + 2

(Points : 1)
zero
one
two
three

Question 4. 4. In which direction does the parabola open?

y = –3x2 + 5x + 1