AS 9158 Apply Linear Systems to Solve Problems 3 Credit Internal
Simultaneous can be solved easily using a graphical calculator as long as the equations are written in the form:
ax+by=c for equations in 2 unknowns
and
ax+by + cz =d for equations in 3 unknowns
examples:
1. 3x + y = 3
x - 2y = 8
GC go to eqn menu --> simultaneous --> 2 unknowns --> put in the coefficients of each variable (ie. how many of each letter) and the number on the other side of the = sign.
First line: 3 1 3
2nd line: 1 -2 8
Solve --> solution is x=2, y=-3
Exercise/Hwk - do page 13 in the Systems of equations workbook.
Simultaneous can be solved easily using a graphical calculator as long as the equations are written in the form:
ax+by=c for equations in 2 unknowns
and
ax+by + cz =d for equations in 3 unknowns
examples:
1. 3x + y = 3
x - 2y = 8
GC go to eqn menu --> simultaneous --> 2 unknowns --> put in the coefficients of each variable (ie. how many of each letter) and the number on the other side of the = sign.
First line: 3 1 3
2nd line: 1 -2 8
Solve --> solution is x=2, y=-3
Exercise/Hwk - do page 13 in the Systems of equations workbook.
Using these notes, complete the following exercise: (Fri 12-6-15) - Exercise with answers completed:
Next we practiced rearranging sets of 3 equations in 3 unknowns to solve using the calculator - workbook pages 18 and 19.