Calculator worksheet report

2.  Aid in finding the final answer
 Tool in investigation and in finding
patterns
 Allows students in focusing on the
“whole picture” rather than on the
nuances of computation

3. Proportion
An equation that equates two ratios
is called a proportion. Thus, if b = 0
and d = 0 then a / b = c / d is a
proportion

4.  Solve the proportion:
x + 2 2x – 3
8 7

6. Equate the cross products of the proportion x + 2 2x – 3 ,
8 7
we obtain the equation 7(x +2) = 8(2x – 3).

7.  Solve the proportion:
x - 3 2 .
4x x + 7
For a quadratic equation, we first
determine the cross products and solve
for the resulting quadratic equation.
2
We obtain (x – 3)(x + 7) = 2 (4x) or x - 4x – 21 = 0