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Sec 8: Writing the Equation of a Line

Homework: Writing Linear Equations Worksheet. Sec 8: Writing the Equation of a Line. Learning Target: Students will write the equation of a line given a graph of any linear equation and apply it to real-world situations. Review: Graph the equation. y = -4x + 5.

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Sec 8: Writing the Equation of a Line

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  1. Homework: Writing Linear Equations Worksheet Sec 8: Writing the Equation of a Line Learning Target: Students will write the equation of a line given a graph of any linear equation and apply it to real-world situations.

  2. Review: Graph the equation • y = -4x + 5

  3. Ex 2A: Write the Equation of the Line Steps: • Find the slope. • Find the y-intercept. • Write in slope-intercept form (y=mx+b).

  4. Ex 2B: Write the Equation of the Line

  5. Ex 3A: Finding the y-intercept when you can’t see it Point-Slope Form Steps: • Find the slope. • Choose another point on the line. • Substitute the slope and point into point-slope form. • Rewrite in slope-intercept form.

  6. Ex 3B: Finding the y-intercept when you can’t see it • Write the equation of the line.

  7. Review: Function Notation • Create a DWW and then answer the following Open Response. • Swine flu is attacking the North Pole. The function, S(t), below determines how many elves have swine flu where t = time in days and S = the number of people in thousands. • Find S(4). • What does S(4) mean? • Find t when S(t) = 3. • What does S(t) = 3 mean? • Write the equation, using function notation, of this line?

  8. Homework • Writing Linear Equations worksheet

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