Function or not? For every input (value between the parentheses), find the output using the given function. Secondly, tell whether the relation is a function or not. Remember that if the same input has two different outputs, the relation is not a function.
Ex: {(2, 14), (3, 16), (4, 14), (5, 16), (2, 20)}
Did you notice that 2 has two outputs: 14, and 20..
Note that if two inputs have the same output, the relations is a function:
Ex: {(2, 14), (3, 16), (4, 14), (5, 18), (6, 20)}, Example f(x) = √ + Domain is only the positive real numbers
f(1) = √ + = √ + = √
f(0) = √ + = √ + = √ = 1
f(3) = √ + = √ + = √

g(x) = 4x – 1

a. g(2) =
b. g(1) =
c. g(0) =
d. g(-2) = 2)

h(x) = -5x + 7
a. h(2) =
b. h(1) =
c. h(0) =
d. h(-2) = 3)

m(x) = 7x – 3

a. m(2) =
b. m(1) =
c. m(0) =
d. m(-2) = 4)

n(x) = x2 – 10

a. n(2) =
b. n(1) =
c. n(0) =
d. n(-2) =