Math Problem Statement

A function is described by the equation f(x) = -3x^2 + 5x - 2, in which f(x) is dependent on x. If a value for the independent variable is chosen from the set {-3, -2, -1, 0, 1}, which of the following would be a corresponding dependent value?

Solution

The equation given in the image is:

f(x)=3x2+5x2f(x) = -3x^2 + 5x - 2

We are tasked with determining the dependent value f(x)f(x) corresponding to an independent variable xx chosen from the set { -3, -2, -1, 0, 1 }.

To find the corresponding dependent value for each xx, we substitute the values of xx into the equation and calculate f(x)f(x).

For x=3x = -3:

f(3)=3(3)2+5(3)2=3(9)152=27152=44f(-3) = -3(-3)^2 + 5(-3) - 2 = -3(9) - 15 - 2 = -27 - 15 - 2 = -44

For x=2x = -2:

f(2)=3(2)2+5(2)2=3(4)102=12102=24f(-2) = -3(-2)^2 + 5(-2) - 2 = -3(4) - 10 - 2 = -12 - 10 - 2 = -24

For x=1x = -1:

f(1)=3(1)2+5(1)2=3(1)52=352=10f(-1) = -3(-1)^2 + 5(-1) - 2 = -3(1) - 5 - 2 = -3 - 5 - 2 = -10

For x=0x = 0:

f(0)=3(0)2+5(0)2=0+02=2f(0) = -3(0)^2 + 5(0) - 2 = 0 + 0 - 2 = -2

For x=1x = 1:

f(1)=3(1)2+5(1)2=3(1)+52=3+52=0f(1) = -3(1)^2 + 5(1) - 2 = -3(1) + 5 - 2 = -3 + 5 - 2 = 0

Now, we match the values from the set { -3, -2, -1, 0, 1 } to the dependent values:

  • For x=0x = 0, the corresponding f(x)=2f(x) = -2.

Thus, the correct answer is -2.

Would you like further details or clarification on this problem?

Additional questions:

  1. How can you determine the maximum or minimum value of a quadratic function?
  2. What is the general form of a quadratic equation and how is it derived?
  3. How do the coefficients in the quadratic equation affect its graph?
  4. How can we graph the quadratic equation f(x)=3x2+5x2f(x) = -3x^2 + 5x - 2?
  5. How does the value of the discriminant affect the nature of the roots in a quadratic equation?

Tip: When dealing with quadratic functions, remember that the vertex represents the highest or lowest point depending on the sign of the leading coefficient.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Quadratic Equations

Formulas

f(x) = ax^2 + bx + c

Theorems

Quadratic Function Properties

Suitable Grade Level

Grades 8-10