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A) Write the vertex form by substituting in values for x, y, h, and k, and then solve for a. Show your work. (10 points)

2 Answers

5 votes

Answer:

y = a(x - h)^2 + k

h = 24, k = 50, x = 4, y = 0

0 = a(4 - 24)^2 + 50

0 = a(-20)^2 + 50

0 = a(400) + 50

0 = 400a + 50

400a = -50

a = - 50/400

a = - 1/8

Explanation:

that's what i put copy and paste

User BlackPOP
by
7.7k points
6 votes

Answer:


a=-(1)/(8)

Explanation:

Given

See attachment for graph

Required

Write the vertex form and then solve for

The general equation is:


y = a(x - h)^2 + k

From the attachment, the vertex is at:


(h,k) = (24,50)

i.e.


h = 24; k= 50

Considering point:


(x,y) = (4,0)

i.e.


x=4;y=0

Substitute these values in
y = a(x - h)^2 + k


0 = a(4 - 24)^2 + 50


0 = a(- 20)^2 + 50


0 =a(400) + 50


0 = 400a + 50

Solve for a


400a = -50

Make a the subject


a=-(50)/(400)


a=-(1)/(8)

A) Write the vertex form by substituting in values for x, y, h, and k, and then solve-example-1
User Louis Cypher
by
8.4k points

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