Quadratics Review

Quadratic Equation

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Multiple Select

X intercepts are also called....

• Solutions

• Parabolas

• Roots

• Puppies

Multiple Choice

Given a graph, how can you find the "solutions" to a quadratic?

• Copy off neighbor

• Plug into calculator

• Solutions are where the quadratic crosses the x axis

• Magic 8 Ball

Multiple Choice

How many solutions do quadratics have?

• 2

• At least 2

• infinite

• 1

Multiple Select

What are the green dots called?

• roots

• vertex

• solutions

• x intercepts

Multiple Choice

What are the x- intercepts?

• (0,0) and (0,4)

• (0,0) and (4,0)

• y= 0

• x= 2

Multiple Choice

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

The standard form of a quadratic equation is ax²+bx+c

What are the values for a, b and c in the following quadratic equation?

3x²+5x-1

Multiple Choice

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3
*remember right side should =0

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Multiple Choice

Identify a, b, and c in: x²−6x+14

• a=3,b=5,c=9

• a=1,b=-6,c=14

• a=1,b=-6,c=-14

• a=1,b=6,c=14

Multiple Choice

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Quadratic Formula

Watch each video and answer the questions that follow.

Multiple Choice

What is the following equation written in standard form?

$$-3x^2+7x\ =\ 9$$  

• $$-3x^2+7x+9=0$$  

• $$-3x^2-2x=0$$  

• $$-3x^2+7x-9=0$$  

• -5x

Multiple Choice

What should you do first in solving this equation?

x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Multiple Choice

4ac would equal: y = 2x² -x -3

• -12

• 8

• -24

• -1

Multiple Choice

Which of the following quadratic equation is written in standard form?

• $$5x^2+4-3x=0$$

• $$12x=7x^2-8$$

• $$3x^2+5x=-13$$

• $$3x^2-8x+2=0$$

Multiple Choice

What is the value of -(-7)?

• -7

• -8

• 7

• 8

Multiple Choice

What is the value of (-3)^2?

• -6

• -9

• 6

• 9

Fill in the Blank

$$3-5x^2=11x$$  

In this quadratic, the  $$a$$   value is _____?