Transformations on Graphs: Equations and Intercepts, Study notes of Algebra

A series of problems related to transformations on graphs, including writing equations for given transformations, finding the x-intercepts of functions, and solving for intervals of increase. The problems involve various functions such as squaring, absolute value, square root, and cubing, and cover techniques like shifting, compressing, stretching, and reflecting.

Typology: Study notes

2011/2012

Uploaded on 12/31/2012

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Lesson
Transformations on Graphs
Write an equation that results in the indicated translation.
1) The squaring function, shifted 9 units upward
2) The squaring function, shifted 9 units downward
3) The absolute value function, shifted 8 units upward
4) The square root function, shifted 7 units to the right
5) The square root function, shifted 7 units downward
Graph the function b
y
startin
g
with the
g
raph of the basic function and then usin
g
the techniques of
shifting, compressing, stretching, and/or reflecting.
6) f(x) = (x - 1)2 - 3
x
-10 -5 5 10
y
10
5
-5
-10
x
-10 -5 5 10
y
10
5
-5
-10
7) f(x) = (x + 2)3 - 3
x
-10 -5 5 10
y
10
5
-5
-10
x
-10 -5 5 10
y
10
5
-5
-10
CollegeAlgebra
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Lesson

Transformations on Graphs

Write an equation that results in the indicated translation.

1) The squaring function, shifted 9 units upward

2) The squaring function, shifted 9 units downward

3) The absolute value function, shifted 8 units upward

4) The square root function, shifted 7 units to the right

5) The square root function, shifted 7 units downward

Graph the function by starting with the graph of the basic function and then using the techniques of

shifting, compressing, stretching, and/or reflecting.

6) f(x) = (x - 1)2 - 3

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

7) f(x) = (x + 2)3 - 3

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

8) f(x) = x + 4 - 2

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

Solve the problem.

9) Suppose that the x-intercepts of the graph of y = f(x) are 4 and 5. What are the x-intercepts of

y = f(x + 6)?

10) Suppose that the function y = f(x) is increasing on the interval (2, 4). Over what interval is the

graph of y = f(x + 8) increasing?

Write the equation that results in the desired transformation.

11) The cubing function, vertically compressed by a factor of.

Find the function.

12) Find the function that is finally graphed after the following transformations are applied to the graph

of y = |x|. The graph is shifted right 3 units, stretched by a factor of 3, shifted vertically down 2

units, and finally reflected across the x-axis.

13) Find the function that is finally graphed after the following transformations are applied to the graph

of y = x. The graph is shifted down 2 units, reflected about the x-axis, and finally shifted right 9

units.

14) Find the function that is finally graphed after the following transformations are applied to the graph

of y = x. The graph is shifted down 6 units, reflected about the y-axis, and finally shifted right 2

units.

Answer Key

Testname: 10_TRANSFORMATIONS ON GRAPHS

1) y = x2^ + 9

2) y3) y == x2x - + 98

4) y = x - 7

5) y6) = x - 7

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

-10 -5 5 10 x

10 y 5

10) (^ 9)^ - -^2 6,^ and - 4)^ -^1

11) y12) y == .8x3-(3|x - 3| - 2)

13) y = - x - 9 + 2

14) y15) = - x + 2 - 6

-5 5 x

y 5

-5 5 x

y 5

16) - 2 and - 5