3rd Form Byron, Octavio Paz, Calderon de la Barca

Quote: If there is a God, he's a great mathematician.-Paul Dirac

Activate Prior Knowledge: Solve equations p.24(51-56)

New Knowledge:

Rewriting equations with more than one variable:

Method 1: Substitute the value of the variable and then solve the equation.

Method 2: Solve the equation in terms of the variable. Then evaluate the resulting expression using the value given.

Examples:

2x + 5y = 4 to find y when x = -1.

Method 1:
2 (-1) + 5y = 4
-2 + 5y = 4
5y = 4 + 2
5y = 6
y = 6/5
y = 1.5

Method 2:
2x + 5y = 4
5y = 4 - 2x
y= (4 - 2x)/5
y= 4 - 2(-1)/5
y= 6/5
y=1.5

Application:
p.29(12-19)

Reflection:
As I work individually with the exercises I felt . . .