Linear Representations review

Watch the linear functions review video

Multiple Select

Select all of the representations below that ARE linear functions...

Linear Representations (Press play)

• Constant rate of change (adding or subtracting by the same amount)

• y = mx + b

• Graph looks like a straight line

Look at graph ->

• Slope is 2; m = 2

• y-intercept is 3; b=3

• Equation:

  y​ = 2x + 3 OR y = 3 + 2x

  ​

• Situation: I started with $3 in my piggy bank, each day I added another $2.

  ​

y = 5x + 1

The y-intercept is 1

and the slope is 5​

​​Press play and sketch the graph as Ms. Mahoney talks you through it.​ Remember 5 is the same as 5/1.

Multiple Choice

Which is a graph of the line y = 4x - 2

Draw

Create a graph of the line y = -1/2x + 1

Draw

Create a graph representing the temperature starting out at -4 degrees and increasing 2 degrees every hour.

Look at graph ->

​What does the y-intercept represent in context​?