Solving Quadratics by Graphing

If the graph of a quadratic does not intercept the x-axis at any point, then it has:

• 1 Real Solution

• 2 Real Solutions

• Half a Solution

• No Real Solution

What  are the solutions of this graph?

• -2 and 3

• -1/2 and -6

• -2 and -6

• 3 and -6

How many zeros does this parabola have? 

• 3

• 2

• 0

• 1

The two solutions to y= 2x² - x - 3 are...

• 1 and 1.5

• -1 and 1.5

• -1 and -1.5

• 1 and -1.5

Solve
2x² + 17x + 21 = 0

• x= ^-21/₂, -17

• x= ²/₃, 16

• x=-7, ^-3/₂

• x=15, -³/₇

Which of the following is not the same as "solution"?

• x-intercept

• roots

• zeros

• y-intercept

Solve
6x² + 17x + 12 = 0

• x = -4/3, x = -3/2

• x = 9, x = 8

• x = 4, x = 3

• x = -4, x = -3

Solve
x² + 2x - 24 = 0

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Find the vertex. 
y = 3x² - 12x + 1

• (-2, 37)

• (2, 1)

• (2, -11)

• (4, 97)

Does this parabola have a minimum or maximum and what is its value?

• minimum: 2

• maximum: 2

• minimum: 5

• maximum: 5