Question

1. If f(x) = 2x + 3, find f(4) and f(-1)f( ) = 2( ) + 3f( ) =So the ordered pair (______, ______ ) isincluded in the function f(x).

Answer 1

f(4) = 11

f(-1) = 1

If f(x) = 2x + 3, we can find f(4) and f(-1) by simply plugging in those values for x in our given function.

f(4) = 2(4) + 3

f(4) = 8 + 3

f(4) = 11

f(-1) = 2(-1) + 3

f(-1) = -2 + 3

f(-1) = 1

The ordered pairs for the two points are therefore, (4, 11) and (-1, 1).