Quadratic Formula

In the equation
y = x² +5x +7, match each leading coefficient with its correct letter 

• a=0, b=5, c=7
• a=1, b=5, c=7
• a=7, b=5, c=1

Tags

CCSS.HSA.SSE.A.1

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.

Tags

CCSS.HSA-REI.B.4B

Solve Using the Quadratic Formula 
2x² + 7x - 15 = 0

• -1.5 or 5
• No Solution
• -5 or 1.5
• 0.7 or 5

Tags

CCSS.HSA-REI.B.4B

Identify the 'c' value: y = 16x² -8x -24

• 16
• -8
• 24
• -24

• Square root

• Quadratic formula

• X-intercepts

• Discriminant 

Tags

CCSS.HSA-REI.B.4B

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• All of the above

Tags

CCSS.HSF-IF.C.7A

If there are no real solutions, the discriminant is

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.HSA-REI.B.4B

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.HSA-REI.B.4B

• 25

• 0

• -25

• -13

Tags

CCSS.HSA-REI.B.4B

Why are quadratic equations set equal to zero?

• Because zero is an easy number to work with.

• Because we are trying to find the x-intercepts and that happens when y=0.

• Because setting it equal to zero helps us find the y-intercepts.

• None of the above

Tags

CCSS.HSA-REI.B.4B