Warm Up - Functions

Which  function situation would have a continuous graph?

• The cost of a number of shoes.
• The number of buses needed for  number of children.
• The amount of water in a beaker.
• The height of Flo on her birthdays.

A cup is filled with 100 ml of water. Every second, 2 ml of water are poured out of the cup.  Which function shows the amout of water in the cup after t seconds?

• w(t) = 100 + 2t
• w(t) = 100 - 2t
• w(t) = 2t - 100
• w(t) = (100-t)/2

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{0, 1, 2, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

What is the domain of the function?

• D:{ x is greater than or equal to 3}
• D:{x is less than or equal to 3}
• D:{all real numbers}
• D:{ x is all real numbers between and including -1 and 5}

What is the range of the function?

• R:{y is less than or equal to 3}
• R:{y is greater than or equal to 3}
• R:{all real numbers}
• R:{y is between and including -6 and 3}