Question

F(2)=7×-9/×-5title="f(2) = \frac{7x - 9}{x - 5} " alt="f(2) = \frac{7x - 9}{x - 5} " align="absmiddle" class="latex-formula">

Answer 1

Hi there!

• f(x) = $\dfrac {7x - 9}{x - 5}$

• Then,
To find th' value of f(2). Substitute " 2 " in place of " x "

f(2) = $\dfrac {7 × 2 - 9}{2 - 5}$

f(2) = $\dfrac {14 - 9}{-3}$

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

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

Hence, f(2) = - $\dfrac {5}{3}$

~ Hope it helps!

Answer 2

We presume you intend
$f(x)=\dfrac{7x-9}{x-5}$
and you want to evaluate f(2).

Put 2 where x is, everywhere.
$f(2)=\dfrac{7\cdot 2-9}{2-5}=\dfrac{5}{-3}=-\dfrac{5}{3}$