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In the function above, if f(k) = 2, then which one of the following co

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Bunuel
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In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   17 Apr 2019, 00:24
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In the function above, if f(k) = 2, then which one of the following could be a value of k ?

(A) –1
(B) 0
(C) 0.5
(D) 2.5
(E) 4

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lucajava
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   17 Apr 2019, 13:38
In the II quadrant, \(f(x)\) is in the middle between 1 and 2 when the \(x\) value is the first dash before the origin.
Presuming it is 1.5 or something near, \(k\) will be 3 or something near.
Since the intercept is negative (as x = 0, look where f(x) meet at), we conclude it's something below 3. Hence, 2.5 it's the only value which satisfies the requirements.
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   05 May 2019, 10:23
Bunuel Can you please share the approach to this problem?
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   08 May 2019, 09:51
y= f ( x) ..means y is function of x....y will take value as per the x values in the function f(x)....

f(k) = 2 or 2 = f(k) .....means for k value of x in function f(x) ......y=2 ....From the graph we can see when y= 2 then x value on the graph would be somewhere from 1.75 to 3 ( Horizontal line in first quadrant) so only 2.5 is the value lying in that range.
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   12 May 2019, 05:16
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f(k)=2
That implies, x=k, y=2
In the first quadrant when y = 2, x could be from 1.75 to 3.5(approx). Only D is in this range.
In the second quadrant when y = 2, x could be around -2. No such value is present in the choice.
Henca, IMO D
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink] New post   06 Apr 2022, 02:34
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Re: In the function above, if f(k) = 2, then which one of the following co [#permalink]
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