Slope CFA Review/Practice

​Slope CFA Practice

Those who did not get a 3 or 4 on the CFA will do a review then retake.​

Multiple Select

Which of the following are definitions for SLOPE?

• Rise/Run

• Run/Rise

• How much a line inclines.

• A slippery snowy hill.

​This means it is the change in y (vertical/up down) over the change in x (horizontal/left right).

​​Slope is Rise/Run

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​ Positive means the incline is going up, or in the positive direction.

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Negative means the incline is going down.​

​​​ ​ Positive vs Negative

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​They help us organize our ideas and count the slope (rise/run). Pay close attentention to the scale of your graph when using slope triangles.

​​Slope Triangles

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Multiple Choice

What type of slope does the line have?

• Positive

• Negative

• Undefined

• Zero

Multiple Choice

What's another way we can calculate slope without using slope triangles?

• Divide the y's and x's.

• Subtract the y's and x's.

• Multiply and add the y's and x's.

• The change in y (subtract) divided by the change in x (subtract)

​CFA Example Question - CEA

Claim - My answer to the question.

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Evidence - The math to back this up (explained in full sentences).

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Analysis - Why I know that my evidence supports my analysis, connecting it all together and expanding on it.​

Open Ended

These students use the following triangles to determine the slope of the following line.

Athena says the slope of the line is 24/6.

Sabrina says the slope of the line is 4/1.

Marcello says the slope of the line 4/2.

 

Which student has an incorrect slope using their slope triangle? Explain why you think that student is incorrect and how they could fix their mistake. Be specific and explain your answer using CEA format.

Be sure to write in complete sentences.