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DESIRE44030
21.07.2020 •
Mathematics
What effect will replacing x with (x−4)have on the graph of the equation y=(x−3)^2?
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Ответ:
The graph is shifted four units to the right.
--------------------------
This question is solved using the shifting concept.
Shifting a function f(x) a units to the left is the same as finding f(x + a).Shifting a function f(x) a units to the right is the same as finding f(x - a).--------------------------
In this question:
The original function is:
Replacing x by x - 4 is equivalent to finding f(x - 4), and so:
Plotting functions f(x) and f(x-4), as in the end of this answer, it can be seen that the blue graph of f(x-4) is shifted four units to the right of the red graph of f(x).
A similar question is given here link
Ответ:
Step-by-step explanation:
Our equation is: y=(x-3)²
x should be replaced by x-4
y=(x-3)²y=[(x-4)-3]²y=(x-4-3)²y=(x-7)²The graph is still a parabola but with a different vertex
The vertex here is :
y= (x-7)² y= x²-14x-49y'= 2x-14
solve y'=0
2x-14=0
2x=14
x=7
You can easily find it without derivating by dividing -14 by -2
since: x²-14x-49
a=1 b= -14 c=-49
-b/2a = 14/2 = 7
the image of 7 is:
y=(7-7)² = 0
so the coordinates of the new vertex are (7,0) and it's a maximum
since y">0
y'= 2x-14
y"= 2 wich is positive
Ответ: