For this case we have a function of the form:
[tex]y = f (x)[/tex]
Where [tex]f (x) = 3x + 4[/tex]
If we have the value of[tex]x = -2[/tex], substituting we have:
[tex]f (-2) = 3 (-2) +4[/tex]
We solve the multiplication taking into account that + * - = - and [tex]3 * 2 = 6[/tex]
[tex]f (-2) = - 6 + 4[/tex]
It is known that different signs are subtracted and the sign of the major is placed.
[tex]f (-2) = - 2[/tex]
Thus,[tex]f (x) = 3x + 4[/tex] evaluated at [tex]x = -2[/tex]is:[tex]f (-2) = - 2[/tex]
Answer:
[tex]f (-2) = - 2[/tex]
