Algebra Post-test review

A function always has...

• a domain of all real numbers

• the x and y

• an exponent

• a constant slope

The definition of a function is...

• a relationship between x and y

• each y value has exactly 1 x value

• each input has exactly one output

• a line that is graphed

Which is not a function?

• A

• B

• C

• D

Which statements are equal to slope? Check all that apply

• run / rise

• rate of change

• (y2 - y1) / (x2 - x1)

• f(x)

What is the rate of change between x = 3 and x = 8?

• 3/5

• 8/5

• 2/3

• 5/3

What function matches this linear table?

• y = 3x

• y = 1/4 x

• y = 3x + 1

Which function is correct for this table?

• y = -1x + 4

• y = -1/3 x + 4

• y = 3/-1 x + 4

• y = -1/3x + 4.67

Which statement is true?

• Domain = X

  Range = Y

• Range = X

  Domain = Y

• Input = Y

  Output = X

• Input = Range

  Output = Domain

If Jasmine has 300, and starts to work at Amazon for $70 per hour, which equation models how much money she will have?

• y = 300 + 70 + 70

• y = 300 + 70x

• y = 300 - 70x

• y = 300x + 70

Kevin starts with 25 water bottles, and he drinks 2 every day. Which function models this scenario?

• y = 25x + 2

• y = 25 + 2x

• y = 25 - 2x

• y = 25x - 2