Functions Review Math 8

Is the relation a function? How do you know?

• No. The inputs are greater than the outputs.

• No. There is an output of 3 twice.

• Yes. There is a pattern in the inputs.

• Yes. For every input there is only one output.

Is the relation a function? How do you know?

• Yes. The outputs are in a pattern.

• No. There are crossing arrows.

• Yes. Each input has only one output.

• No. Each output has more than one input.

Is the relation a function? How do you know?

• Yes. It's a graph!

• No. It's curvy.

• Yes. It passes the horizontal line test.

• No. It doesn't pass the vertical line test.

Mystery question! What are these people doing?

• They are stuck in the air

• They are making "people letters"

• They are flying on the trapeze

• They are playing in Ms. Nelson's backyard

What is the equation for this graph? Choose all correct answers.

• $y=\frac{3}{2}x+6$

• $y=\frac{2}{3}x+6$

• $y=1.5x+6$

• $y=6x+\frac{3}{2}$

• $y=6x+1.5$

Write an equation for the table in the form

 $y=mx+b.$  

•  $y=6x+8$  

•  $y=3x+2$  

•  $y=3x+8$  

•  $y=3x$  

Write an equation for the situation.

Mr. Payne wants to be a super trapeze extraordinaire just like Ms. Nelson. In order to do this he must practice. He already has 3 minutes of practice added up over the course of his lifetime, so that is a start. He would also like to practice 110 minutes each week.

• $y=3x+110$

• $y=\frac{110}{3}x$

• $y=110x+3$

• Mr. Payne could never be as good as Ms. Nelson
  

Which function (A or B) has a greater rate of change (slope)?

• 
• 

What trapeze move is this?

• Pirouette

• Penny Roll

• Set Hocks Off

• Oops! My socks fell off!

Is this graph linear or non-linear? How do you know?

• Non-linear because it is a curved line.

• Non-linear because it is not a function.

• Linear because we can graph it.

• Linear because there is a pattern.