Question

FAN & MEDAL ((:!!

If the range of the function
f(x) = 7x – 2.7 is {14.1, 30.9, 41.4, 58.9, 68},

what is its domain?

Answer 1

@ganeshie8

Answer 2

@Mehek14
@johnweldon1993
@Preetha

Answer 3

Hint* what is "range" it is the y-values that come out of the expression when you plug in certain x-values *the domain*

So here we only need to find out what 'x' values we can plug into this expression to make it equal each of the given y-values.

I'll do the first one as an example:

The given Range "y" is 14.1

So the expression \(\large f(x) = 7x - 2.7\) can be re-written as \(\large 14.1 = 7x - 2.7\)

Now solving for 'x' we get \(\large x =2.4\)