Do Now 3/21/23 Alg.1

What is the vertex form for a vertex of (-3,-5) and when a=-2?

• y = -2(x-3)²+5
• y = -2(x+3)²+5
• y = -2(x+3)²-5

Identify the vertex and whether the graph opens up or down.

• (-1, 4); opens up
• (-1, 4); opens down
• (1, 4); opens up
• (1, 4); opens down

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

What is the constant that should be added to the expression to complete the square: x²+16x

• 16
• 8
• 64
• 32

Convert to vertex form.

• y=3(x+1)² - 8
• y=3(x-1) ² - 8
• y=3(x+2)² - 8
• y=3(x-2)² - 8

Convert to vertex form.

• y=-(x-5)² + 21
• y=-(x+5)² + 21
• y=-(x+10)² + 21
• y=-(x-10)² + 21

For the quadratic function x² - 17 + 30, which of these would be a factor:

• (x + 5)

• (x + 15)

• (x - 15)

• (x + 2)

Which of the following is a correct factor for

3x² + 13x + 12

• (x + 4)

• (3x + 3)

• (3x + 4)

• (x + 6)