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the graph of a function f(x) and the equation of g(x)\ g(x) = 2 - |x - …

Question

the graph of a function f(x) and the equation of g(x)\
g(x) = 2 - |x - 2|\
graph of f(x)\
which statement correctly compares f(x) and g(x)?\
(a) they have the same y-intercept.\
(b) they have the same axis of symmetry.\
(c) they have the same vertex.\
(d) they have the same x-intercept.

Explanation:

To solve this, we analyze the y - intercepts of \(f(x)\) (from the graph) and \(g(x)=2 - |x - 2|\) (by substituting \(x = 0\)).

Step 1: Find the y - intercept of \(f(x)\)

The y - intercept of a function is the value of the function when \(x = 0\). From the graph of \(f(x)\), when \(x=0\), we look at the point where the graph of \(f(x)\) crosses the y - axis. By observing the graph, we can see that the graph of \(f(x)\) passes through \((0,2)\), so the y - intercept of \(f(x)\) is \(y = 2\).

Step 2: Find the y - intercept of \(g(x)\)

For the function \(g(x)=2-|x - 2|\), to find the y - intercept, we substitute \(x = 0\) into the function.

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The y - intercept of \(f(x)\) is \(2\) and the y - intercept of \(g(x)\) is \(0\). So, they do not have the same y - intercept.

Step 3: Analyze the axis of symmetry of \(f(x)\) (from the graph) and \(g(x)\)
  • For the graph of \(f(x)\) (a linear function, since it's a straight line), a linear function \(y=mx + b\) has no axis of symmetry (except in the case of a vertical line, but a non - vertical, non - horizontal linear function is not symmetric about a vertical or horizontal line in the way a parabola or an absolute value function is). The graph of \(f(x)\) appears to be a straight line with a non - zero slope, so it does not have a vertical axis of symmetry.
  • For the function \(g(x)=2-|x - 2|\), we can rewrite the absolute value function \(y =|x - h|\) has a vertical axis of symmetry \(x=h\). For \(g(x)=2-|x - 2|\), the vertex form of the absolute value function \(y=a|x - h|+k\) (here \(a=- 1\), \(h = 2\), \(k = 2\)) has a vertical axis of symmetry \(x = 2\). So, they do not have the same axis of symmetry.
Step 4: Analyze the x - intercepts of \(f(x)\) (from the graph) and \(g(x)\)
  • To find the x - intercept of \(f(x)\), we look for the value of \(x\) when \(y = 0\) (where the graph of \(f(x)\) crosses the x - axis). From the graph, we can see that the graph of \(f(x)\) passes through \((2,0)\), so the x - intercept of \(f(x)\) is \(x = 2\).
  • To find the x - intercept of \(g(x)\), we set \(g(x)=0\) and solve for \(x\):
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This gives us two cases:

  • Case 1: \(x-2=2\), then \(x=2 + 2=4\)
  • Case 2: \(x - 2=-2\), then \(x=-2 + 2=0\)

The x - intercepts of \(g(x)\) are \(x = 0\) and \(x = 4\), and the x - intercept of \(f(x)\) is \(x = 2\). So, they do not have the same x - intercept.

Step 5: Analyze the vertex (we can also think about the "corner" point for the absolute value function and the mid - point for the linear - like part of \(f(x)\))
  • The graph of \(f(x)\) is a straight line, it does not have a vertex (a vertex is a point where the direction of the graph changes, like in a parabola or an absolute value function). The graph of \(g(x)=2-|x - 2|\) is an absolute value function. The vertex of \(y=a|x - h|+k\) is at \((h,k)\). For \(g(x)=2-|x - 2|\), the vertex is at \((2,2)\). From the graph of \(f(x)\), when \(x = 2\), the value of \(f(2)\) (by looking at the graph, the two lines in the graph of \(f(x)\) intersect at \(x = 2\)): if we assume the two lines in the graph of \(f(x)\) are \(y_1\) (with positive slope) and \(y_2\) (with negative slope), at \(x = 2\), both lines pass through the same point. By observing the graph, when \(x = 2\), the value of \(f(2)\) is \(2\) (since the intersection point of the two lines in \(f(x)\)'s graph is \((2,2)\)). And the vertex of \(g(x)\) is at \((2,2)\). So, they have the same vertex (o…

Answer:

They have the same x - intercept (the x - intercepts of both functions are \(x = 0\) and \(x = 4\))