Reporting Category 2: TEKS 3D-4C

Reporting Category 2:

TEKS 3D-4C

• ​Equation must be in slope-intercept form (y by itself).

  • Move x (-/+)

  • Divide by coefficient in front of y

• Determine whether the line should be dotted or solid

• Determine whether the graph should be shaded above or below

Choosing a Graph From an Equation

Multiple Choice

#45

• A

• B

• C

• D

Multiple Choice

#49

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• D

Multiple Choice

#51

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• D

You can do one of the options above.

• Substitute the x- and y-values from the answer choices into the inequality and determine whether it is true or false.

• Graph the inequality and plot each point on the graph to determine which point is in the solution set.

*Remember, a solution cannot be on a dotted line!!

Determining an Ordered Pair That is in the Solution Set

Multiple Choice

#47

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• D

Multiple Choice

#55

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Multiple Choice

#57

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• Determine whether the line is dotted or solid

• Determine whether the graph should be shaded above or below

• Most of the real-world examples used are a "no more than" problem (which means less than or equal to)

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Graphing a Real-World Inequality

Multiple Choice

#56

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If you are not able to determine the effects of the linear function, you can graph in y= by replacing f(x) with x.

Transformations of Linear Functions

Multiple Choice

#58

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Multiple Choice

#60

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Fill in the Blanks

Get y by itself.

1. Move x (-/+)

2. Divide by the coefficient in front of y

Use your calculator to graph the two equations and select the answer choice that matches the graphs.

Graphing Systems of Equations

Multiple Choice

#63

• A

• B

• C

• D

Multiple Choice

#64

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Multiple Choice

#67

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• Use the same steps from graphing systems of equations

• Then determine whether the line is dotted or solid and the shading of each inequality

• The overlapping shaded region is the solution

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Graphing Systems of Inequalities

Multiple Choice

#68

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• D

Use the same steps for calculating linear regression:

1. STAT -> 1:Edit...

   1. L₁ -> x-values

   2. L₂ -> y-values

2. STAT -> CALC -> 4:LinReg

3. Enter x 5

4. r = correlation coefficient

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Calculating Correlation Coefficient

Multiple Choice

#70

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• D

Be prepared to determine whether something has association, causation, both, or neither (similar to your benchmark)

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Multiple Choice

#72

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• D

Multiple Choice

#74

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• Use a Linear Regression Equation to be able to solve for a line of best fit or make predictions.

• Use the TABLE or GRAPH to make predictions based off of given x-values.

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Linear Regression or Line of Best Fit

Multiple Choice

#75

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Multiple Choice

#76

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Multiple Choice

#77

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Multiple Choice

#78

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• D