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| This is a program for testing if a line is Parallel, Perpendicular, | |
| or Neither for the TI line of graphing calculators. | |
| It is written in TI-Basic. | |
| PROGRAM: TESTSLOP | |
| :Input "SLOPE 1: ",A | |
| :Input "SLOPE 2: ",B | |
| :(AB)->C | |
| : | |
| :If C=-1 | |
| :Then | |
| :Disp "PERP" | |
| :Else | |
| :If C=A^2 and C=B^2 | |
| :Then | |
| :Disp "PARALLEL" | |
| :Else | |
| :Disp "NEITHER" | |
| :End |
Never mind: I had a brain fart. -5*5=-25
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Issue: If AB=-1 and A=-5, B=5 the program will return a false string of PERP instead of the correct string of NEITHER. Do any of you have an equation that will prevent this?