W8d2 Vertex Form Worksheet

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W8D2 Vertex Form
Warm Up
1. Solve x + 10x = 48
2. What is the vertex of y = 3(x
4)
5
1. x =
5
6 2
2. (4,-5)
Vertex Form Worksheet Inquiry
Write in vertex form. Find the vertex then rewrite the equation in vertex form.
1. y = x + 8x + 10
2. y = x + 8x
2
3. y = x
20x + 80
4. y = x
10x + 25
5. y = x
12x + 36
answers
1. y = (x + 4)
6
2. y = (x + 4)
18
3. y = x
10)
20
4. y = (x
5)
5. y = (x
6)
Notice the last two are perfect square trinomials. So we could complete the square to get that (x
h)
Lesson 16 Complete the Square
Vertex Form
EX 1:
y = x + 16x
6
y + 6 = x + 16x
y + 6+64 = x + 16x + 64
y + 70 = (x + 8)
y = (x + 8)
70
EX 2:
y = x
4x
9
y + 9+4 = x
4x + 4
y + 13 = (x
2)
y = (x
2)
13
EX 3:
y = x + 6x + 14
y
14+9 = x + 6x + 9
y
5 = (x + 3)
y = (x + 3) + 5
EX 4:
y = 3x + 6x + 7
y
7+3 = 3(x + 2x + 1)
y
4 = (x + 1)
y = (x + 1) + 4
EX 5:

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