Question 927556
Normally, you would see it like this:
{{{ f(x) = x - 6 }}}
The left side is saying: There is a function on the right side
and the variable is {{{ x }}}
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If you have:
find {{{ f(4) }}}
It says: replace {{{ x }}} on the right side with {{{ 4 }}},
so you get:
{{{ f(4) = 4 - 6 }}}
{{{ f(4) = -2 }}}
You can also express this as the point ( 4,-2 )