Math Problem Statement

let f(x)= - 3 (x-1)^2+4 and g(x) be the function graphed below.

Which statement is a true comparison of the properties of f(x) and g(x)? A. The graph of g(x) has a lower maximum value but a higher y-intercept value than the graph of f(x). B. The graph of g(x) has a higher maximum value and a higher y-intercept value than the graph of f(x). C. The graph of g(x) has a lower maximum value and a lower y-intercept value than the graph of f(x). D. The graph of g(x) has a higher maximum value but a lower y-intercept value than the graph of f(x).

Solution

To determine the correct comparison between the properties of f(x)f(x) and g(x)g(x), we need to analyze the properties of f(x)=3(x1)2+4f(x) = -3(x - 1)^2 + 4 and then compare it to the function g(x)g(x) based on its graph (which you would need to provide if it's not described).

Step 1: Analyze f(x)=3(x1)2+4f(x) = -3(x - 1)^2 + 4

This is a quadratic function in vertex form, f(x)=a(xh)2+kf(x) = a(x - h)^2 + k, where:

  • a=3a = -3
  • h=1h = 1
  • k=4k = 4

Properties of f(x)f(x):

  • Vertex: The vertex of f(x)f(x) is (1,4)(1, 4), which is the maximum point since a=3a = -3 (negative, meaning the parabola opens downwards).
    • Maximum value: 4 (since k=4k = 4, the maximum y-value of f(x)f(x) is 4).
  • Y-intercept: To find the y-intercept, set x=0x = 0: f(0)=3(01)2+4=3(1)+4=1f(0) = -3(0 - 1)^2 + 4 = -3(1) + 4 = 1 So the y-intercept of f(x)f(x) is (0,1)(0, 1).

Step 2: Analyze g(x)g(x) based on the graph

Without the graph of g(x)g(x), I'll outline how to make the comparison:

  • Maximum value of g(x)g(x): From the graph, identify the highest point on g(x)g(x).
  • Y-intercept of g(x)g(x): Find where g(x)g(x) crosses the y-axis.

Step 3: Compare properties of f(x)f(x) and g(x)g(x)

Using the information you gather from the graph of g(x)g(x), compare the following:

  • Maximum value of g(x)g(x) vs. f(x)f(x)'s maximum value (4).
  • Y-intercept of g(x)g(x) vs. f(x)f(x)'s y-intercept (1).

Answer selection:

Once you have this information, you can choose the correct statement based on whether g(x)g(x)'s maximum and y-intercept are higher or lower compared to f(x)f(x).

  • If g(x)g(x) has a lower maximum and higher y-intercept than f(x)f(x), select A.
  • If g(x)g(x) has a higher maximum and higher y-intercept than f(x)f(x), select B.
  • If g(x)g(x) has a lower maximum and lower y-intercept than f(x)f(x), select C.
  • If g(x)g(x) has a higher maximum and lower y-intercept than f(x)f(x), select D.

Would you like to provide more details about the graph of g(x)g(x), or should I clarify anything else?

Here are 5 questions to further explore:

  1. How do we know the direction of a parabola based on its equation?
  2. What impact does the value of aa in f(x)=a(xh)2+kf(x) = a(x - h)^2 + k have on the graph?
  3. How do you calculate the vertex of a quadratic function in standard form?
  4. What does the y-intercept represent in a function graph?
  5. How do you determine if a function has a maximum or minimum?

Tip: In vertex form, the vertex (h,k)(h, k) immediately gives you the maximum or minimum point, making it easier to analyze quadratic functions.

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Math Problem Analysis

Mathematical Concepts

Quadratic Functions
Vertex Form
Graph Interpretation

Formulas

f(x) = a(x - h)^2 + k
f(0) = -3(0 - 1)^2 + 4

Theorems

Vertex Form of Quadratic Functions

Suitable Grade Level

Grades 9-11