If f(x)=3x-5, then how do you find f(2)?

1 Answer
Jun 19, 2016

#f(2) = 1#

Explanation:

#f(x)# means a function of #x#. In this case the function of #x# is #3x-5#

So if you have #f(2)# you're applying the function with your value of #x# as 2, so we simply substitute 2 into the equation where there is an #x# so in this case:

#f(x) = 3x - 5#
#f(2) = 3(2) - 5#
#f(2) = (3*2) - 5#
#f(2) = 6 - 5#
#f(2) = 1#