3/26 Homework Grade

What is the vertex of
f(x) = 2(x - 5)² + 12

• (-5, -12)
• (5,-12)
• (5, 12)
• (-5, 12)

What is another name for the x-intercepts of a quadratic?

• y-intercept
• Zeros
• x-axis
• They don't have another name

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

If the quadratic has a positive 'a' coefficient, what direction does the parabola open?

• Up
• Down

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

True or False:
The domain of a quadratic is all real numbers.

• False
• True

Is this function wider, narrower, or the same as y=x²?
f(x) = -6(x-7)² - 9

• Wider
• Narrower
• Same

Find the axis of symmetry for the function:
f(x) = 2x² - 4x - 6

• x = 1
• x = -1
• x = 4
• x = -4

What is the equation for the axis of symmetry of 
f(x)= (x +1)² + 5

• x = 1
• x = -1
• x = -5
• x = 5

Which is the standard form of a quadratic equation?

• y= ax²+bx+c

• y= mx + b

• (y-y₁)= m(x-x₁)

• y= a(x-h)²+k