Math Problem Statement

Starting with the graph of f(x) = x^2, write the equation of the graph that results from: (a) writing f(x) 3 units upwards, (b) shifting f(x) 2 units to the left, and (c) reflecting f(x) about the x-axis.

Solution

The image contains the following problem based on transformations of the function f(x)=x2f(x) = x^2:

Problem: Starting with the graph of f(x)=x2f(x) = x^2, write the equation of the graph that results from:

(a) Writing f(x)f(x) 3 units upwards:
y=_____y = \_\_\_\_\_

(b) Shifting f(x)f(x) 2 units to the left:
y=_____y = \_\_\_\_\_

(c) Reflecting f(x)f(x) about the x-axis:
y=_____y = \_\_\_\_\_


Solutions:

  1. (a) Writing f(x)f(x) 3 units upwards:
    To shift a function f(x)f(x) upwards by kk units, you add kk to the function:
    y=f(x)+3=x2+3y = f(x) + 3 = x^2 + 3

  2. (b) Shifting f(x)f(x) 2 units to the left:
    To shift a function f(x)f(x) left by hh units, you replace xx with x+hx + h:
    y=f(x+2)=(x+2)2y = f(x + 2) = (x + 2)^2

  3. (c) Reflecting f(x)f(x) about the x-axis:
    To reflect a function f(x)f(x) about the x-axis, you multiply the function by 1-1:
    y=f(x)=x2y = -f(x) = -x^2


Would you like further details on transformations or have any questions about these steps? Here are 5 related questions:

  1. How would you shift f(x)f(x) by 4 units to the right?
  2. What would the equation be if f(x)f(x) was reflected over the y-axis instead of the x-axis?
  3. How do you vertically stretch f(x)=x2f(x) = x^2 by a factor of 2?
  4. How can we reflect f(x)f(x) over both the x-axis and the y-axis?
  5. What happens to the graph when you shift it both horizontally and vertically?

Tip: When shifting graphs, always check whether the shift is horizontal or vertical, as each type has a different effect on the equation.

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Math Problem Analysis

Mathematical Concepts

Function Transformations
Quadratic Functions

Formulas

Vertical shift: y = f(x) + k
Horizontal shift: y = f(x + h)
Reflection about x-axis: y = -f(x)

Theorems

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Suitable Grade Level

Grades 9-11