3.31.21 CW - Unit 3 Part 2 Review

Which of the following equations matches vertex form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

If given the equation y = 3(x + 5)² - 4, what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

What is the axis of symmetry for the following quadratic function: f(x)=1/2(x-4)²+3

• x=4
• x=-4
• x=1/2
• x=3

What is the domain of the function
x² + 3?

• All Real Numbers
• x>3
• x<3
• It is impossible to determine.

Which equations matches the graph above?

• $h\left(x\right)=\ \left(x+1\right)^2-4$

• $h\left(x\right)=-\left(x+1\right)^2-4$

• $h\left(x\right)=\left(x+4\right)^2-1$

• $h\left(x\right)=-\left(x+4\right)^2+1$

Explain the translation:

y = x² - 7

• translated left 7

• translated right 7

• translated up 7

• translated down 7

Explain the translation:

y = (x - 5)² - 1

• translated right 5, up 1

• translated left 5, down 1

• translated right 5, down 1

• translated left 5, up 1

(5-i)(5-i)

• 15-8i
• 36
• 24+10i
• 24-10i

(-3-i)(6-i)

• -21-7i
• -19-3i
• -15-5i
• -17-9i

• A
• B
• C
• D