Quadratic Equations and Functions

How do you find the vertex?

y = ax² + bx + c

• x = -b/(2a) and plug back in for y

• x = b/(2a) and plug back in for y

• x = -b/a and plug back in for y

• x = b/a and plug back in for y

What is the vertex?

y = 2x² + 12x + 5

• (6,149)

• (-3,-13)

• (3, 59)

• (-6,5)

Does the equation have a max or min? Where?

y = 2x² + 12x + 5

• max at -3

• min at -3

• max at -13

• min at -13

What is the axis of symmetry?

y = 2x² + 12x + 5

• -3

• x = -3

• y = -13

• x = -13

What is the vertex?

y = x² - 8x + 10

• (4,-6)

• (-4,58)

• (-8, 138)

• (8, 10)

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSF-IF.C.7A

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

True or false:
The solution, root, x-intercept, and zero of a problem are all the same thing

• True
• False, because the solution and root are the same but the x-intercept and zero are different
• False, because the x-intercept and root are the same but the zero and solution are different
• False, they are all different

Does the following quadratic equation have a maximum or minimum value? How can you tell?
y=x²+2x-3

• Minimum value, because the a value is positive
• Maximum value, because the b value is positive
• Maximum value, because the a value is positive
• Minimum value, because the c value is negative

Tags

CCSS.HSA.REI.B.4

Find the y-intercept of f(x) = 2x²-2x + 1

• 2
• -2
• 1
• -1

Tags

CCSS.HSF-IF.C.7A