Finding Solutions Quadratics

• {49,-49}

• {8,-8}

• {7,-7}

• No Solution

The equation y = x²  is graphed.  Based on this graph, what are the roots of the equation x²  = 0?

• 0

• -1 and 1

• 2 and 0

• y

The solutions of the quadratic equation 
x²+2x-15=0 are

• x = 3 or x = 5

• x = 5 or x = -3

• x = -5 or x = 3

• x = -3 or x = -5

Find the zeros of this quadratic.

• b=-2, b=-4

• b=-2, b=4

• b=1/2, b=-2

• b=2, b=-4

What are the two solutions to             x² - 4 = 0

• x = 2 and x = -2

• x = 4 and x = - 4

• x = 2 and x = -4

• x = 2 and x = 2

Find the roots/zeros of x² + 4x - 21

• -7, 3

• -3, 7

The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

What does the discriminant tell us?

• The maximum or minimum

• The y-intercept

• The number and type of solutions

• The axis of symmetry

How many x-intercepts does it have?

• 0

• 1

• 2

• 4

What is the equation to the graph?

• y=(x-5)(x-4)

• y=(x+5)(x+4)

• y=x²-20x-9

• y=(x-5)²