Functions

Give the domain and range of the relation.
{(-2,-1), (-1,0), (0,-1), (1,0), (2,-1)}

• D: {-2, -1, 0, 1, 2}
  R: {-1, 0}
• D: {-1, 0}
  R: {-2, -1, 0, 1, 2}
• D: {-2, -1, 0, 1, 2}
  R: {-1, -1, -1, 0, 0}
• D: {-2 < x < 2}
  R: {-1 < y < 0}

Given the following domain and range, tell if it is a function.

• D: {-4, 0, 2}

  R: {-2, -2, 1, 1}

  Function

• D: {-4, -2, 0, 2}

  R: {-2, 1}

  Function

• D: {-4, -2, 0, 2}

  R: {-2, -2, 1, 1}

  Not a Function

• D: {-4, -2, 0, 2}

  R: {-2, 1}

  Not a Function

Is this relation a function?

• Yes a Function

• Not a Function

What is another name for input?

• range
• Vertical Line Test
• domain
• Horizontal Line Test

How can we tell if the function will have an inverse?

• range
• Vertical Line Test
• domain
• Horizontal Line Test

The inverse has been reflected over which line?

Answer is y=x

• y = x

• y =1

• y = 0

• y = x + 1

p(x) = 3x + 4 and q(x) = 2x²

Find q(p(-3))

• 50

• -50

• 24

• None of these.

p(x) = 3x + 4 and q(x) = 2x²

Find q(p(x))

• None of these.

f(x) = 3x + 10
g(x) = x - 2
Find f(g(5))

• 19
• 23
• -10
• None of these.

Are the following inverses of each other?

• True
• False