Unit 4B Day 14 Test Review.notebook
1
January 31, 2020
Nov 125:52 PM
Algebra 1
Mrs. Hall
January 31, 2020
Get out your homework and materials for class.
Nov 133:53 PM
Review of Graphing Linear Equations from yesterday
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 126:21 PM
< or > dotted line
< or > solid line
Nov 126:29 PM
Steps to graphing an inequality
1. Write the equation in slopeintercept form (y= )
2. Decide if the line should be solid or dotted
3. Graph the yintercept and then the slope
4. Shade above or below the line (depending if it is greater than or less than)
The solution is the set of all the points in the shaded area and the points on the solid line.
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 133:56 PM
Check Homework
(PDF)
Nov 133:57 PM
Review for Test
Unit 4: Linear Functions
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 133:58 PM
Unit 4 Linear FunctionsSections on the test:
• parallel and perpendicular lines
• inverse functions
• scatter plots and trend lines
• graphing linear inequalities
• slope, rate of change, direct variation
• slopeintercept form
• pointslope form
• standard form
• intercepts
Test Review Packet
• find slope from a graph, two points or in an equation
• know the different equations of lines & be able to convert from one equation to another
• be able to write each equation having a point and a slope or just two points
• graph different equations
Unit 4A
Unit 4B Day 14 Test Review.notebook
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January 31, 2020Practice
Test Review Packet
Unit 4B
• find the slope of parallel & perpendicular lines
• write slopeintercept equations of lines that are parallel or perpendicular to another line
• find the inverse of a line given to you either on a graph or algebraically
• name what type of correlation in graph
• graph linear inequalities
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 134:50 PM
Parallel & Perpendicular Lines
Find the slope of a line parallel to each line.
1. y = 2/3x 6
2. y = 5x + 1
3. 10x + 3y = 15
Nov 135:10 PM
Find the slope of a line perpendicular to each line.
1. y = 8x + 6
2. y = 4/5x 3
3. x + 3y = 6
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 135:11 PM
Tell whether the following lines are parallel, perpendicular, or neither.
3x 4y = 86x 8y = 24
3x 4y = 88x + 6y = 24
Nov 135:15 PM
Write the slopeintercept equation of the line described.
1. through (5,4) and parallel to y = 4/7x
2. through (5,0) and perpendicular to y = 5x + 5
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 135:20 PM
Inverse Functions
Graph the line then choose points from the graph and find the inverse. Write the table of values and graph the inverse.
y = 5/2x + 3
Nov 135:23 PM
Find the inverse of each algebraically by switching the x and y variables.
1. 3x + 6y = 24 2. y = 2/3 x + 5
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 135:29 PM
Scatter Plots & Lines of Fit
Tell whether each graph shows a positive correlation, a negative correlation, or no correlation.
Nov 135:45 PM
A scatter plot of data showing the percentage of Internet users who visited an online store on a given day in December include the points (2008, 2.0) and (2010, 4.5). Write the slopeintercept form of the equation for the line of fit.
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 135:50 PM
Based on the equation you just found, predict what percentage of Internet users will visit the online store in 2020.
Nov 135:53 PM
Graph Linear Inequalities
Sketch the graph of each linear inequality.
1. y > 2x + 1
2. 4x + y < 16
Unit 4B Day 14 Test Review.notebook
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January 31, 2020
Nov 135:59 PM
Test next class!
• Complete the test review
• Study your notes in your composition book and look over our review. You may also pull problems from the homework and practice them as well.