Video+3

Video 3: "Algebra I"
I. Before you watch the video answer the following questions. The title of the video is "Algebra I"

What do you think this video will be about?

 I think the video will explain basic algebra

Mention five words you think you might listen to in the video.  operation, solve, equations, variables, algebra II. Now click on the following link and watch the video. While watching, please answer the following questions: [] Image taken from: [] on August 12th. 2009

1. Mr. Mc Call is solving three types of equations in this video. Which are those types of equations?


 * Equations with one variable
 * Equations with variables in both sides
 * Equations with multiples variables

2. What are the two keys he mentions for solving any equation?

The two keys that he mentions for solving any equation are the reciprocal and the additive inverse. 3. a. Mention the steps he takes to solve the 1st problem.

 - First sum on both sides the number 2 to cancel the -2. - Then multiply both sides by -1 / 5 to cancel the numerator and  convert the positive X.   - and finish solving the equation b. What kind of equation is this one?

 This equation is of one variable 4. a. Mention the steps he takes to solve the 2nd problem.

- He First use the distributive property on one side of the equation 6x - 2 + 3x = 4 (x-5) »»»»» 6x - 2 + 3x = 4x - 20

then, he rest 4x on both sides of the equation 9x - 2 - (4x) = 4x - 20 - (4x) »»»»» 5x - 2 = - 20

then the added 2 on both sides (2) + 5x - 2 = - 20 + (2) »»»»»» 5x= -18  and finally multiplied by 1 / 5 on both sides of the equation. (1/5) . 5x= -18. (1/5) »»»» x= -18/5 b. What kind of equation is this one? this equation is an equation with variables in both sides  5. a. Mention the steps he takes to solve the 3rd problem.

 First rest 2L on both sides P + (-2L) = 2L + 2W -(2L) »»»»»»»» P- 2L = 2W

<span class="long_text">multiplied by 1 / 2 on both sides of the equation.

(1/2) . (P-2L) = (1/2). 2W »»»»»» P/2 - 2L/2 = 2W/2 <span class="short_text"> and finally, the equation becomes

P/2 - L = w b. What kind of equation is this one?

This is an equation with multiple variables 6. a. Mention the steps he takes to solve the 4th problem.

<span class="long_text">First he multiplied by "d" on both sides of the equation. (d). a = ((b+c)/d). (d) »»»»»» d. a = b + c

finally, <span class="long_text">he rest (c) on both sides of the equation. d<span class="long_text">. a -(c) = b +c -(c) »»»»»»»» d. a - c = b b. What kind of equation is this one?

This is an equation with multiple variables

c. What’s the difference between problem 3 and problem 4? <span class="long_text">The difference between problem 3 and problem 4 is the number of variables and the use of different methods for solving equations. In problem 3 is used first the additive inverse and in problem 4 is started using the reciprocal. 7. Did you like the video?

<span class="medium_text"> __y__es, because he explained in an easy and __practice__ how to solve different equations,no matter the number of variables existing in the equation. 8. What new things did you learn?

<span class="short_text"> I learned nothing, because I already knew how to solve these problems.