Brenda Lynch TI Summit Algebra 1 October 20, 2012

Transcription

1 I. Solving Equations A. On the TI-84 i. Plugging in answer with ( ) ii. Using the STO key to check your answer iii. Boolean Check (0 means incorrect, 1 means correct) iv. Using y= to solve an equation v. Use Table to find answer B. On the N-Spire i. Plugging in answer with ( ) 1. Home, New Document, Save?, No, Enter, Add Calculator ii. Using the STO key to check your answer iii. Boolean Check (true or false) iv. Using Graphs to solve an equation 1. Ctrl, +, Add Graphs, 2. At f1(x)= enter left side of equation, Down arrow 3. At f2(x)= enter right side of equation, enter 4. Menu, Trace, Graph Trace, use arrows 5. Get close to intersection, type your guess, down arrow to confirm v. Numerical Solve

2 II. Patterns to Develop Linear Functions A. Rope Knotting Activity B. On the TI-84 i. Stat, Edit, enter data into L1 and L2 ii. 2 nd, StatPlot, Window (to see my scatterplot) iii. Use y= to guess a good trend line and record here: iv. Stat, Calc, LinReg, L1, L2, Y1, Enter v. Y=, to change size of line, record equation here: vi. Graph and compare C. On the N-Spire i. Home, New Document, No, Add List and Spreadsheet ii. Enter data 1. A knots 2. B length 3. Down arrow to fill in the rest of the 2 columns iii. Menu, Data, Quick Graph, Label Axis iv. Menu, Analyze, Add Moveable Line v. Need to make Graph bigger? 1. Doc, Page Layout, Ungroup 2. Move to next page Ctrl, right arrow or click 1.2 vi. Rotate and Translate to fit data Record your equation here: vii. Page 1.1, Cursor in C1, viii. Menu, Statistics, Stat Calculations, Linear Regression ix. Fill in table 1. X-List - Knots, TAB 2. Y-list length, TAB down to OK, ENTER x. Page 1.2, Menu, Analyze, Regression, Linear Regression xi. To change color of lines so you can compare 1. Select the regression (Down arrow or up arrow) 2. Ctrl Menu, Color, Line color 3. Right arrow to select a color, Enter 4. Record Linear Regression from calculator here: If both equations are rounded to tenths place or integers, will they be the same? Which equation is MORE accurate? Why?

3 III. Graphing Linear Functions and Inequalities and Systems A. On the TI-84 i. To clear our scatter plot 1. 2 nd, y=, Plotsoff, enter ii. Y=, enter equations iii. Adjust the window iv. Zoom Options v. Trace vi. 2 nd, Table for x/y Chart 1. Can change the scale with 2 nd, Tblset, 2. Down arrow to delta TBL, enter a number, 2 nd Graph vii. Find Intersection 1. 2 nd, Trace, Intersection, 2. First curve? Be sure you see Y1, Enter 3. Second curve? Be sure you see Y2, Enter 4. Guess? Get close to the intersection, Enter 5. If x= is a decimal and you want fractions a. 2 nd, Quit b. Math, to Fraction, Enter viii. Shading for Inequalities 1. Y1=, left arrow to line, Enter (fat line), Enter (greater than), Graph 2. Y2=, left arrow to line, Enter (fat line), Enter (greater than), Enter (less than), Graph

4 B. On the N-Spire i. Graphing Lines 1. Home, New Document, Save? No, Enter, Add Graphs 2. f1(x)= enter function, enter 3. Menu a. VIEW i. Hide/Show axis ii. Show Grid iii. Show/Hide entry line (ctrl+g) iv. Show Table (Ctrl+T) b. Window/Zoom i. Settings ii. In and Out iii. Standard iv. Quad 1 v. User vi. Square c. Trace i. Graph Trace Be sure to go to the x-intercept! ii. Trace All iii. Trace Step 4. Rotate to develop the concept of slope 5. Click label 3 times to edit the numbers 6. Translate to develop the idea of y-intercept 7. Grab page, Adjust scale from x-axis

5 ii. Graphing Systems 1. How Many Solutions to the System? a. Home, My Document, down arrow, Enter b. Save?, No, Enter c. Read and answer the questions 2. Systems of Equations a. Home, New Document, No, Add Graphs b. f1(x)=, DOWN ARROW, f2(x), Enter c. Graphically i. Menu, Analyze, Intersection, ii. Lower Bound, move to the left of the intersection, Enter, iii. Upper Bound, move to the right of the intersection, Enter d. Algebraically i. Ctrl, Doc, Add Calculator ii. Menu, Algebra, Solve Systems of Linear Equations iii. Fill in chart and TAB to OK, Enter iv. Type in equation in slope-intercept form, 3. Systems of Inequalities a. To shade i. f1(x), back arrow and delete the =, select, enter ii. f2(x), back arrow and delete the =, select, enter

6 IV. Website for free 30 day trail of Software A. Downloads B. Many Activities V. My Contact information A. B.