Lesson: 2-3 Standard Form

Open Ended

2. ​Which equation from Part B would you use to find the ​x​-intercept of the graph that represents the situation? Explain.

Graphing

Sketch the graph of

3y = −18

Graphing

Sketch the graph of

4x = 12

Home

Open in new tab

Copy link

​

​Q: How do you determine what x & y represent when writing the equation?

Since the number of pounds of each kind of nut are the UNKNOWN quantities, they are represented by the VARIABLES x and y.

​The number of pontds of almonds and cashews cannot be less than zero.

Open Ended

Try It! How does the equation ​10x + 12y = 30​ change if Tamira spends ​$40​ on almonds and cashews? How many pounds of nuts can she buy if she wants about the same amount of almonds as cashews?

Open Ended

• DO YOU UNDERSTAND?

  ESSENTIAL QUESTION: What information does the standard form of a linear equation reveal about a line?

Open Ended

• DO YOU UNDERSTAND?

  Vocabulary: Describe an example of a constraint in a real-world situation.

Open Ended

• DO YOU UNDERSTAND?

  Communicate Precisely: How is the standard form of a linear equation similar to and different from the slope-intercept form?

Open Ended

• DO YOU UNDERSTAND?

  Error Analysis: Malcolm says that 𝘺=−𝟣.𝟧𝘹+𝟦y equals negative 1.5 x plus 4 in standard form is 𝟣.𝟧𝘹+𝘺=𝟦1.5 x plus y equals 4. What is the error that Malcolm made?

Open Ended

• DO YOU UNDERSTAND?

  Communicate Precisely: How can you determine if the point (𝟥,𝟩) lies on the graph of the equation 𝟦𝘹−𝘺=𝟨 without graphing

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D