TI 84 Graphing Calculator Project Example Simple Sailboat

Hand Drawing

Writing Equations LINEAR FUNCTIONS y = mx + b m = slope Slope Method 1:Slope Method 2: y = y-intercept Method 1: extend the line to the y-axis Method 2: pick a point on the line (x, y). Substitute into y = mx + b and solve for “b”.

Writing Equations QUADRATIC FUNCTIONS y = x 2 Parent Function: y = -x 2 Open downward: y = -x 2 + 5Shift up 5 units: y = - (x-4) 2 + 5Shift right 4 units: y = - 0.5(x-4) 2 + 5And Open wider:

Writing Equations

Start and Name a New Program: 1.Press PRGM button 2.Arrow right twice to NEW 3.Enter 4.You are now in alpha mode

Start and Name a New Program: 5.Name your program: 6.Use your first 3 initial of your last name followed by the first 3 initial of your first name 7.Example: John Smith will name his program SMIJOH

Initial Program Setup: 8.Press: 2nd, DRAW, 1:ClrDraw, ENTER 9.Press: ZOOM, 5:ZSquare, ENTER

Initial Program Setup: Press: 2nd, FORMAT, arrow down 3 & right once to AxesOff, ENTER, ENTER

Initial Program Setup: 12.Press: 2nd, STATPLOT, 4:PlotsOff, ENTER 13.Press: VARS, arrow right once to Y-VARS, 4:On/Off, 2:FnOff, ENTER

Now You Are Ready to Enter Your Programming Code: 14.2 nd, DRAW, 6:DrawF is used to enter all functions. 15.Example:

Now You Are Ready to Enter Your Programming Code: :1:DrawF x+9/(x≥-9 and x≤0) 2 nd, DRAW, 6:DrawF 2 nd, TEST, 4: ≥ 2 nd, TEST, 6: ≤ 2 nd, TEST, →,1:and X,T,θ,nALPHA, : ENTER

Now You Are Ready to Enter Your Programming Code: :2:DrawF -x+9/(x≥0 and x≤9) 2 nd, DRAW, 6:DrawF 2 nd, TEST, 4: ≥ 2 nd, TEST, 6: ≤ 2 nd, TEST, →,1:and X,T,θ,nALPHA, : ENTER

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

Now You Are Ready to Enter Your Programming Code: :3:DrawF -3x–30/(x≥-9.4 and x≤-8.3) ENTER

Now You Are Ready to Enter Your Programming Code: :4:DrawF 3x–30/(x≥8.3 and x≤9.4) ENTER

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

Now You Are Ready to Enter Your Programming Code: :A:DrawF 0/(x≥-9 and x≤9) ENTER

Now You Are Ready to Enter Your Programming Code: :B:DrawF -2/(x≥-9.3 and x≤9.3) ENTER

Now You Are Ready to Enter Your Programming Code: :A:DrawF 0/(x≥-9 and x≤9) :B:DrawF -2/(x≥-9.3 and x≤9.3) Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

Now You Are Ready to Enter Your Programming Code: :1:DrawF 0.3(x+10) 2 –6/(x≥-13 and x≤-7.6) ENTER

Now You Are Ready to Enter Your Programming Code: :2:DrawF 0.3(x+5) 2 –6/(x≥-7.6 and x≤-2.5) ENTER

Now You Are Ready to Enter Your Programming Code: :1:DrawF 0.3(x+10) 2 –6/(x≥-13 and x≤-7.6) :2:DrawF 0.3(x+5) 2 –6/(x≥-7.6 and x≤-2.5)

Now You Are Ready to Enter Your Programming Code: :3:DrawF 0.3x 2 –6/(x≥-2.5 and x≤2.5) ENTER

Now You Are Ready to Enter Your Programming Code: :4:DrawF 0.3(x-5) 2 –6/(x≥2.5 and x≤7.2) ENTER

Now You Are Ready to Enter Your Programming Code: :5:DrawF 0.3(x-10) 2 –6/(x≥7.2 and x≤13) ENTER

Now You Are Ready to Enter Your Programming Code: :3:DrawF 0.3x 2 –6/(x≥-2.5 and x≤2.5) :4:DrawF 0.3(x–5) 2 –6/(x≥2.5 and x≤7.2) :5:DrawF 0.3(x–10) 2 –6/(x≥7.2 and x≤13)

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

Now You Are Ready to Enter Your Programming Code: :C:Line(-0.5,-2,-0.5,8.5) ENTER 2 nd, DRAW, 2:Line

Now You Are Ready to Enter Your Programming Code: :D:Line(0.5,-2,0.5,8.5) ENTER

Now You Are Ready to Enter Your Programming Code: :E:Circle(10,6,2) ENTER

Now You Are Ready to Enter Your Programming Code: :C:Line(-0.5,-2,-0.5,8.5) :D:Line(0.5,-2,0.5,8.5) :E:Circle(10,6,2) 2 nd, DRAW, 9:Circle

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

Now You Are Ready to Enter Your Programming Code: :F:Shade (0/(x≥-9 and x≤-0.5), x+9 /(x≥-9 and x≤-0.5),-9,-0.5, 1,1) ENTER

Look At the Drawing So Far: Press 2nd, QUIT Press PRGM, EXEC, select your program name, ENTER

Enter Edit Mode: Press 2nd, QUIT Press PRGM, →, EDIT, select your program name, ENTER Arrow down to where you left off.

That’s It!! Add more if you like. Sailboats, for you, now carry a low originality score. You may NOT use this code in your project.