Practice Test #1

Question 1

What do you do with this negative sign?

-(a+b)²

Answer 1

Distribute negative sign into bionomial.

Question 2

How do you determine if a function is even?

Answer 2

Plug in (-x) for f(x) and if you get the same function it is even.

Even if f(-x)= f(x)

Question 3

How do you determine an odd function?

Answer 3

You plug in (-x) for f(x) and if you get a negative function the function is odd.

Odd if f(-x)=-f(x)

Question 4

When notating a function increasing or decreasing in interval notation do you use open or closed brackets for the point where the function starts and stops.

Answer 4

Open brackets.

Question 5

What sign do you use to express several points of a function in interval notation.

Answer 5

Union.

Question 6

What kind of brackets do you use to notate one point or several points of a function?

Answer 6

Curly brackets.

Question 7

What is the rate of change formula?

Answer 7

d = f(x₂)-f(x₁)/x₂-x₁

Question 8

When expressing domain for a function with a radical sign what bracket do you use for it’s minimum value?

Answer 8

Closed bracket beause you can let 0 be part of the domain because 0 can be squared.