Lines - 1.1. Goal I will review different equations for lines, and find a linear regression equation on my calculator.

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Presentation transcript:

Lines - 1.1

Goal I will review different equations for lines, and find a linear regression equation on my calculator.

Reviewing Important Formulas Slope

Different Equations for Lines Point-Slope Form

Different Equations for Lines Slope-Intercept

Different Equations for Lines General Form

More General Form Example Steps: Find the general form of the equation between the points (-2,0) and (4,-5) 1.Find slope 2.Find y-intercept by plugging slope and one point into y=mx+b. 3. Multiply to get rid of fraction in front of x. 4. Get x and y on the same side of equation.

More General Form Solution -5x-6y = 10

Perpendicular lines

Linear Regression What is it? Steps Allows us to estimate a line of best fit for data using the calculator. 1. Stat. Enter. 2.Enter data into L1 and L2. 3. Stat. Calc. LinReg. Enter. 4.Vars. Y-Vars. Enter. Enter.

Linear Regression Example Let’s do number 46 on page 10 in your textbook.

Quizzy Poo

Homework 1.1