STAAR ALGEBRA 1 REVIEW: function/ domain and range

STAAR ALGEBRA 1 REVIEW: function/ domain and range

Poll

A relation is a function if the x value does not repeat.

How confident are you in telling if a representation of a relationship is a function?

• 100%

• 80%

• 50%

• 25% or less

Multiple Choice

Which mapping diagram is not a function?

Multiple Choice

Is this graph a function or not a function?

• Function

• Not a Function

• HINT: for a graph to be a function, coordinates can not share x values meaning you can not have 2 points on top of each other. use the vertical line test.

Multiple Choice

Which set of ordered pairs is not a function?

• (1, 3), (2, 7), (3, 8), (4, 11)

• (2, 3), (4, 9), (3, 8), (4, 15)

• (1, 2), (3, 5), (6, 9), (7, 11)

• (-9, 4), (-6, 3), (-2, 8), (0, 21)

Multiple Choice

Which table represents a function?

Multiple Choice

Use the vertical line test

• Function

• Not a Function

Poll

Now how do you feel about Function or Non-Function?

• 100%

• 80%

• 50%

• 25% or less

Now we will talk about domain and range of a function

OR: what are my possible x and y values--where does this function live

Domain: the x values from left to right (smallest to biggest)

• For domain, focus on the x value

• What can those values be

Multiple Choice

The student council sent its members on four field trips during the school year. The number of buses needed to transport the members on each trip is a function of the number of members who went on each trip. This function consists only the ordered pairs (52, 3), (72, 4), (86, 5), and (105, 6). What is the domain for this situation?

• {52, 105}

• {3, 4, 5, 6}

• {52, 72, 86, 105}

• {3, 4, 5, 6, 52, 72, 86, 105}

Multiple Choice

A Water tank is draining and takes a certain amount of time. Which inequality best represents the domain?

• 0 < y < 500

• 500

• 0 < x < 20

• 20

• HINT: What is the smallest x and what is the biggest?

Multiple Choice

What is the domain of the function? HINT: what letter is being used for x?

• 0<h<80

• 0≤h≤80

• 0≤t≤4.5

• 0<t<4.5

Multiple Choice

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

Multiple Choice

A student rode a bike from school to a recreation center. The graph shows the student's distance in miles from the recreation center after riding the bike for x minutes. What is the range of the function for this situation? HINT: what are the smallest and biggest y values the line touches?

• All real numbers greater than or equal to 0 and less than or equal to 28.

• All real numbers greater than or equal to 0 and less than or equal to 9.

• All real numbers less than or equal to 28.

• All real numbers less than or equal to 9.

Multiple Choice

What is the range of the function graphed in the image? HINT: range is y values. open circle no equal sign, closed circle gets the equal sign.

• {x | -2 ≤ x < 4}

• {x | -2 < x ≤ 4}

• {y | -3 < y ≤ 3}

• {y | -3 ≤ y < 3}

Poll

ARE YOU READY FOR YOUR STAAR QUESTIONS ON FUNCTION/ DOMAIN AND RANGE?

• DEFINITELY

• I FEEL PRETTY GOOD

• 50/50

• I'M NOT SURE

GO TO GOOGLE CLASSROOM FOR 6-2

STAAR REVIEW FUNCTIONS/ DOMAIN AND RANGE