Question

Find the pre-image of 7 in the function f(x)=2x-3/5​

Answer 1

Answer:

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Answer 2

${\tt{\red{\underline{\underline{\huge{QUESTION}}}}}}$

Find the pre-image of 7 in the function f(x)=2x-3/5

${\tt{\red{\underline{\underline{\huge{Answer:}}}}}}$

pre-image of 7 = ?

Here,

pre-image = x =?

image = y=f(x)

$f(x) = \frac{2x - 3}{5}$

or,7×5=2x-3

or,35=2x-3

or,35+3=2x

or,38/2=x

Hence,the pre-image is 19.

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