Name___________________________ Hour_________ Chapter 4/5A (Graphing Equations) Assignments _____ Day 1: T-tables Worksheet _____ Day 2: p. 259 (1, 2, 15, 16) & Quiz Review WS _____ Day 3: p. 259 (4–10, 17–23, 39) Quiz #1 _____ Day 4: Worksheet #3 _____ Day 5: p. 355–356 (8, 10, 12, 26, 27, 29–31) p. 215 (14, 16) _____ Day 6: Worksheet #4 _____ Day 7: Worksheet #5 Quiz #2 _____ Day 8: Test Review Worksheet _____ Day 9: Chapter 4/5A Graphing Equations Test 1 Day 1 Pre-Requisite Skill *When graphing, you want equations to look like (Solve for y) y= 1. 5x + y = 7 2. 2x – y = –9 3. 6y = 5x + 6 4. x + 3y = 9 5. x–y=4 6. x – 5y = 10 Given: x+y=6 Find all x and y values that will work in the given equation. Since there is an _________________ number of answers, we draw a picture of the solutions rather than list all of them. 2 2 Ways to Graph T-Table Slope–Intercept Form T–Table To make a line, you only need _________ points. But for a t-table, you need __________ points so you have a check point. You may choose any value for x using the following requirements: positive, zero, and negative x-values T-tables cannot contain fractions (Choose the denominator number to eliminate fractions) Since you choose “x” then you are to solve the equation for y first (Get y =) Make a t-table and graph the solutions for the following equations. 1. y = 4 – 2x 2. y= 3. 3x + y = 1 3 x 5 3 4. x – 2y = 6 Special Lines – only have one variable in the equation. 5. x=5 ________________ line that crosses through the ______ axis. 6. y = –3 ________________ line that crosses through the ______ axis. HW: T-Tables Worksheet 4 Day 2 Slope if given a graph Warm up. Ordered pairs & Quadrants/Axis A ( , ) _________ B ( , ) _________ C ( , ) _________ Complete a t-table for each equation. Then graph. 1. y = 3x + 1 2. x=4 3. x + 2y = 4 ---------------------------------------------------------------------------- Slope if given a graph SlopeSymbolFormula5 1. Graph: x y= 3 x2 4 Positive Slope- Line goes up and to the right y Slope = ___________ 2. Graph: x 4x – 2y = 8 (Find y first) Negative Slope- Line goes up and to the left y Slope= _____________ Special Lines 3. Graph: x y = 1 y 4. Graph: x x=3 y Horizontal Line Vertical Line Slope= ____________ Slope=____________ HW: p. 259 (1, 2, 15, 16) & Quiz Review WS 6 Day 3 Slope if Given 2 Points rise run = change.in. y.(y ) change.in.x.(x) m= y 2 y1 x 2 x1 Find the slope of the line given 2 points. 1. (7, 4), (5, 8) 2. (–3, 0), (6, 3) 3. (–2, 1), (–2, –6) 4. (-3, -4), (-9, -7) 5. (9, -4), (-4, -4) 6. (2, 1), (2, 4) Quiz Time HW: p. 259 (4–10, 17–22, 39) 7 Day 4 Graphing Equations in Slope-Intercept Form y=mx Graph: y= + b 1 x+2 3 m = ______ b=( , ) Graph: Start with _______________________ then do the ______________________ 1. 4. y = 4x 1 2. y= 2 x+6 5 3. y = 2x m = ______ m = ______ m = ______ b=( b=( b=( , ) y=3 5. , ) m = ______ b=( b=( ) ) x = 4 m = ______ , , , ) 8 Graph in Slope-Intercept Form * First- 6. 2x – y = 4 7. m= b= ( y+3= 2 (x – 6) 3 m= , ) Graph 2 ways: T-Table b= ( , ) 3x + y = 1 Slope-Intercept Form HW: Worksheet #3 9 Day 5 Solution Sets and Graphing Inequalities Warm up (for quiz). Find the slope. 1. (5, 4), (8, 16) 2. (–2, –3), (8, –5) Simplify each answer. 3. 7 0 4. 2 1 5. 0 8 6. 8 4 7. 7 4 8. 3 6 -------------------------------------------------------------------------------Solution Sets Graph. 1. y = 3x – 1 2. Find the solution set for the line if given {(-1, -4), (0, 1), (1, 4), (2, 5)}. Solution: _________________ What is a solution? * an x or y value that makes the equation “true” * a point that falls on the line 10 3. Find the solution set for the line 2x – 5y = 10 if given {(4, 2), (5, 0), (-10, -6)}. Solution: ____________________ Graph Inequalities 4. y 3x 1 5. y 2 x2 5 Steps 1. 2. 3. Graph – y-intercept then slope Solid or broken line? > or < use broken line or use a solid line Shade – Greater than: Shade ABOVE Less than: Shade BELOW 11 Graph. 6. 2x – 2y < 8 7. x3 8. Is (3, 3) part of the solution set for y > –2x + 4? HW: p. 355–356 (8, 10, 12, 26, 27, 29–31) & p. 215 (14, 16) 12 Day 6 Writing an Equation of a Line Warm up. Graph the following by filling in the t-tables. 1. y = 4x – 1 x y 2. y= 2 x+2 3 x y 3. –4x + 2y = 8 x y --------------------------------------------------------------------------------------------- Writing an Equation of a Line Write the equation of the given line. 1.) 2.) m= y= b=( , ) m= b=( , ) b=( , ) y= 3.) 4.) m= y= b=( , ) m= y= 13 Review for Quiz Identify Slope and y-intercept 1. y= 1 x 3 m = _____ b=( , 2. y = 5 3. m = _____ ) b=( , x=4 m = _____ ) b=( , ) Graph using slope and y-intercept 4. y= 3 x–1 2 5. 2x + y = 4 Graph the inequality. 6. x – 3y 6 HW: Worksheet #4 14 Day 7 Writing Equations of Lines from Patterns 1. 6, 9, 12, … 2. 3, 1, –1, –3, … 3. 3, 6, 12, 24, … 4. 7, 5, 6, 4, 5, 3… Write an equation 1. Find Slope: y x or (Change in y’s and x’s) y 2 y1 x2 x1 2. Determine the y-intercept (plug slope into the y = mx + b equation and use any ordered pair to find b) 3. Write the equation (y = mx + b) 5. Write an equation for cost. # socks 1 cost 3 2 6 3 9 4 5 12 15 m = __________ b = __________ equation: _______________ 15 6. x y 1 3 2 5 3 7 4 9 5 11 m = __________ b = __________ equation: _______________ 7. x y 1 8. x y –2 2 1 2 –6 4 3 3 –10 6 5 4 –14 8 7 m = __________ m = __________ b = __________ b = __________ equation: _______________ equation: _______________ Quiz Time HW: Worksheet #5 16