For items 5 - 8, identify the quadratic functions using the given a graph. A. y =(x - 7)2 – 6 B. y =(x + 7)² +6 C. y =(x + 7)2 - 6 D. y = (x – 7)² +6 5. fo 12 14

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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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For items 5 - 8, identify the quadratic functions using the given a graph.
A. y = (x – 7)2 – 6
B. y =(x + 7)2 + 6
C. y =? (x + 7)2 – 6
5.
D. y =(x – 7)2 +6
1
A. y = (x – 2)² + 2
B. y = -(x – 2)² + 2
C. y = (x – 2)2 + 2
D. y = -(x – 2)² – 2
6.
2
-2
10
A. y = (x – 2)
B. y = -(x – 2)?
C. y =(x + 2)2
D. y = -(x + 2)?
7.
A. y = -4(x + 2)² + 1
B. y = -4(x – 2)² – 1
C. y = 4(x – 2)² + 1
D. y = 4(x – 2)² – 1
8.
Transcribed Image Text:For items 5 - 8, identify the quadratic functions using the given a graph. A. y = (x – 7)2 – 6 B. y =(x + 7)2 + 6 C. y =? (x + 7)2 – 6 5. D. y =(x – 7)2 +6 1 A. y = (x – 2)² + 2 B. y = -(x – 2)² + 2 C. y = (x – 2)2 + 2 D. y = -(x – 2)² – 2 6. 2 -2 10 A. y = (x – 2) B. y = -(x – 2)? C. y =(x + 2)2 D. y = -(x + 2)? 7. A. y = -4(x + 2)² + 1 B. y = -4(x – 2)² – 1 C. y = 4(x – 2)² + 1 D. y = 4(x – 2)² – 1 8.
• Follow This One!
Study the graph of the quadratic function below. Determine the equation
given in the graph by following the steps below.
1. Identify the vertex (h, k)
2. Identify the coordinates of
any point on the parabola.
3. Substitute the vertex (h, k)
and coordinates of any
point (x, y)into the vertex
form y = a(x – h)² + k.
4. Get the value of a.
5. Write the equation of the
quadratic function.
Example
• Try to Understand!
When the vertex and any point on the parabola are clearly seen, the
equation of the quadratic function can be determined by using the form of a
quadratic function y = a(x – h)2 + k.
Do the "Follow This One!" activity above. The vertex of the graph of
the quadratic function is (4, -2). The graph passes through the point (2,0). By
11
replacing x and y with 2 and 0, respectively, and h and k with 4 and -2
respectively, we have
y = a(x – h)² + k
(0) = a(2 – 4)2 + (-2) the x-intercept
0 = 4a – 2
ta
Substitute the vertex and
Substitute the vertex, h=4, k=.
2 and the value of a= to y =
Simplify
Divide both sides
a(x – h)² + k form the
required quadratic function
y = a(x – h)² + k
by 4
1
y =; (x – 4)2 – 2
Thus, the quadratic equation is y = (x – 4)² – 2.
Transcribed Image Text:• Follow This One! Study the graph of the quadratic function below. Determine the equation given in the graph by following the steps below. 1. Identify the vertex (h, k) 2. Identify the coordinates of any point on the parabola. 3. Substitute the vertex (h, k) and coordinates of any point (x, y)into the vertex form y = a(x – h)² + k. 4. Get the value of a. 5. Write the equation of the quadratic function. Example • Try to Understand! When the vertex and any point on the parabola are clearly seen, the equation of the quadratic function can be determined by using the form of a quadratic function y = a(x – h)2 + k. Do the "Follow This One!" activity above. The vertex of the graph of the quadratic function is (4, -2). The graph passes through the point (2,0). By 11 replacing x and y with 2 and 0, respectively, and h and k with 4 and -2 respectively, we have y = a(x – h)² + k (0) = a(2 – 4)2 + (-2) the x-intercept 0 = 4a – 2 ta Substitute the vertex and Substitute the vertex, h=4, k=. 2 and the value of a= to y = Simplify Divide both sides a(x – h)² + k form the required quadratic function y = a(x – h)² + k by 4 1 y =; (x – 4)2 – 2 Thus, the quadratic equation is y = (x – 4)² – 2.
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