Answer:
Step-by-step explanation:
linear
Answer: f(x) is just a fancy way of writing y in an equation
Example: f(x)= 2x+4 is the same as y= 2x+4
<em>The answer is 3</em>
a= 2, b=1,
a²-b² = 2²-1²= 4-1 =3
