Section 3-6

11/15/2010

 
In class we just competed section 3-6. One thing we learned was how to define a variable in terms of another. To solve this problem you have to decide which unknown quantity the variable will represent. Then you have to show the other quantity in terms of that variable. Another thing we learned is dealing with consecutive integers. First you have to define a variable before describing the equation in words. Make a variable the first unknown integer and then define the other numbers in terms of that first unknown integer. Last but not least we learned how to solve problems with same direction travel, opposite direction travel, and round trip travel. The first step is to define the missing variables in the problem. Then you have to create a table to relate the numbers that includes rate time and distance because rate times the time equals the distance. You then write out and solve the equation to get your final answer.

What I learned in section 3-2

11/4/2010

 
In lesson 3-2 I learned about how to solve multi-step equations. For the simpler multi-step equations you need to first eliminate the fractions you have on each side of the equation. Then you should combine the like terms on either side of the equation, which may involve using the distributive property. Next you should undo the addition or subtraction on either side of the equation. Once you have done this you should undo all of the multiplication or division in the problem. If you have an equation with fractions you should then use the method of adding fractions or multiplying the fraction by a number to clear the fractions. If you have and equation that happens to have decimals you can multiply all the numbers in the equation by a power of ten that fits the problem.