Start-Up Day 3 August 28th-31st

Solve and Graph each Absolute Value Inequality

Algebra 2Unit 1 Day 3

Objective - Students will be able to write and graph linear equations in slope-intercept form and standard form.

Essential Questions:If you have 3 points, how can you use the slope formula to determine whether the point are collinear?Does the format of the equation identify its form?Do you think it is easier to identify parallel and perpendicular lines when the equations of the lines in standard form or in slope – intercept form?

Home Learning:•p. 79 #11, 15, 19, 20, 23, 29, 31, 33,46•p. 87 #21, 22, 23, 31, 33, 37, 38, 40 + 45• Begin working on the MathXLforSchool.com Unit 1 Test Review Assignment

SE p. 74 and SC p. 35 Key Concept - Slope

Slope is also denoted with the letter m.Slope is “ Rate of Change” .

Problem #1 p.75

horizontal

Zero undefined positive negative

4

-3

“Got It?” #2 – Your turn

Answer: y = 6x +5

Answer: No, any 2 points on a line can be used to calculate the slope.

Problem 3 “Got It” – Your turn

3x 3x

Subtraction Property of Equality

3x

22 Division Property of

Equality

Problem 4 p.77

Problem 4 “Got It” – Your Turn

Work Period: 10 minutes• p. 78 #1,4,7 & 58

Lesson Check 2-3 answers

Problem 1 p. 82

Problem 1 “Got It” – Your Turn

1 -3 -7

Problem 2 p. 82

Your Turn: Write in point-slope form, an equation of the line through (7, 11) and (13,

7)

Problem 3 “Got It” – Your turn

1. Karina did not distribute the 10 to the 3.6

2. Karina did not place the x and y variables on the same

side of the equation.

Writing Equations:

Graphing by using Intercepts: Problem 4 “Got It” – Your Turn

2x – 4y 8 0 0

84

4y2

p. 85 Take note

Problem 6 p.85

Problem 6 “Got It” – Your Turn.

Problem 6 “Got It” – Your Turn.

Ax + By = C When asked to find the equation of a line, just choose the right form and you’ll do fine!

If two points are all that you see, then the slope formula is the key!

To find the slope of a perpendicular line, just turn it upside down and change the sign.

There is really not much left to tell, the slopes are equal if the lines are parallel.

Now, if “m” and “b” are what you know, then the slope intercept form is the way to go!

If “m” and a point are what you possess, then the point-slope form is your best guess.And, remember one thing before you are done, STANDARD FORM is much more fun!

So clear out any fractions that you’ve got, and put everything into its proper spot.

C. Kennedy

An Application Problem; Problem #5 p. 84

Problem 5 p. 84

Problem 5 p. 84

Work time:• p. 86 Lesson Check #1-7 odd

Lesson Quiz 2-4 p. 86 Answers

Lesson 2-3 Exit Slip: Show Me What You Know!!

Lesson 2-3 Exit Slip: Show me what you know!

Exit Slip Lesson 2-4 – Show me what you know!

Exit Slip Lesson 2-4 Quiz Answers.