Question

How do you find `f(3/4)` given `f(x)=-1+1/4x`?

Answer 1

When you insert 0.75 in the function, the answer will be -0.8125

Explanation:

You will solve it easily by putting 0.75=3/4 into function equation.

Now you will have -1+(3/16)= -13/16 = -0.8125

Answer 2

I would prefer to retain fractions as the expression is given in fractions.

Explanation:

Given
`f(x)=-1+1/4x`
To find `f(3/4)`, insert value of `x` in both sides of the equation. We obtain
`f(3/4)=-1+1/4xx3/4`
`=>f(3/4)=-1+3/16`
Simplifying RHS we obtain
`f(3/4)=(-16+3)/16`
`f(3/4)=-13/16`