Warmup.

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Presentation transcript:

Warmup

Homework Questions

Homework Questions

Write Equations of Lines Ch. 2.4 Essential Question: How do you write an equation of a line? Student will write a summary on the steps to writing an equation of the line.

Key Concepts: Writing an Equation of a Line GIVEN USE Slope m and y-intercept b Slope – intercept form y = mx + b Slope m and a point (x1 , y1) Point – slope form y – y1 = m( x – x1) Points (x1,y1) and (x2,y2) First use the slope formula to find m. Then use point-slope form with either given point

Write an equation given slope and y-intercept Write an equation of the line that has the given slope and y – intercept. a. m = 3, b = 1 b. m = – 2 , b = – 4

Write an equation given a slope and a point Write an equation of the line that passes through (– 1, 6) and has a slope of 4.

Write an equation of parallel and perpendicular lines Write an equation of the line that passes through (4, –2) and is (a) parallel to, and (b) perpendicular to, the line y = 3x – 1. (a) (b)

Write an equation given two points Write an equation of the line that passes through the given points. (* Hint: Point Slope form) a. (– 2, 5) , (4, – 7) b. (6, 1) , (–3, –8)

Homework Workbook – Pg. 23 1-6, 10-14,17,18,21 Reminders: Get Homework Sheet signed Due Friday 8/21 Study for Quiz Topics Solving and graphing linear equations Solving and graphing linear inequalities