Math Problem Statement
The graphs of f and g are given in the figure.
There are two curves graphed on the x y coordinate plane.
The first curve, labeled f, begins at the point (−4, −2), goes up and right passing through the points (−3, −1) and (−2, 1),reaches a maximum point at on the y-axis at y = 3, goes down and right passing through the point (2, 2), and ends at the point (4, −1).
The second curve, labeled g, begins at the approximate point (−4, 2.5), goes down and right passing through the point (−2, 1) intersecting f, reaches a minimum at approximately (0, 0.5), goes up and right passing through the point (2, 2)intersecting f, and ends at the point (3, 4).
(a)
State the values of
f(2)
and
g(−2).
f(2)
=
g(−2)
=
(b)
Which is larger,
f(3) or g(3)?
f(3)
g(3)
(c)
For what values of x is
f(x) = g(x)?
(Enter your answers as a comma-separated list.)
x = (d)
On what interval(s) is
f(x) ≤ g(x)?
(Enter your answer using interval notation.) (e)
State the solution of the equation
f(x) = −1.
(Enter your answers as a comma-separated list.)
x = (f)
On what interval(s) is g decreasing? (Enter your answer using interval notation.) (g)
State the domain and range of f. (Enter your answers using interval notation.)
domain range (h)
State the domain and range of g. (Enter your answers using interval notation.)
domain range
Solution
Let's break down and solve each part of the problem step by step based on the provided description of the graphs.
(a) State the values of and .
- : From the description, the function passes through the point (2, 2), so .
- : The function passes through the point (-2, 1), so .
(b) Which is larger, or ?
- From the description:
- is between the points (2, 2) and (4, -1), likely slightly below the x-axis, which suggests it might be negative.
- ends at the point (3, 4), meaning .
Thus, is larger than .
(c) For what values of is ?
- From the description, the functions and intersect at the points (-2, 1) and (2, 2).
Therefore, .
(d) On what interval(s) is ?
- is less than or equal to where the graph of is below or on the graph of .
- From the description, is below or equal to on the intervals and .
So, the answer is .
(e) State the solution of the equation .
- From the description, at .
So, .
(f) On what interval(s) is decreasing?
- is decreasing when the graph of is moving down as increases.
- From the description, is decreasing on the interval .
So, the interval is .
(g) State the domain and range of .
- Domain of : The function is defined from to , so the domain is .
- Range of : The lowest point on the graph of is and the highest point is , so the range is .
(h) State the domain and range of .
- Domain of : The function is defined from to , so the domain is .
- Range of : The lowest point on the graph of is approximately and the highest point is , so the range is .
Would you like more details or have any questions?
Here are 5 related questions for practice:
- What is the maximum value of and where does it occur?
- On what interval(s) is increasing?
- Find given the minimum point of .
- How many solutions does the equation have?
- Compare and .
Tip: When comparing values of functions at specific points, it helps to visualize the graph to see where one function is higher or lower than the other.
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Math Problem Analysis
Mathematical Concepts
Functions
Graphing
Intersection of Functions
Domain and Range
Formulas
-
Theorems
-
Suitable Grade Level
Grades 9-10
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