Warm Up by Barbara Amador

Ms. Barbara

bamador — 2013-11-26 18:04:18 UTC

What are the differences and similarities between graphing and substitution as methods to solve systems of linear equations?

Natalie Blandon

2013-11-27 17:56:59 UTC

The similarites are:

- you get the same anwser

-they are easy

- they both use the y-intercept form for something

Differences

-one has much more work than another

-one is not as relaiable

Carlos Urcuyo

2013-11-27 17:57:01 UTC

The similarities is that -At least one of the equations in the system needs to be in slope-intercept.

-You get similar answers

The differences is that

-Substitution takes less time

-Graphing both need to be in slope-intercept

-Graphing doesn't get the exact answer, it's an estimate.

Mariela Guadamuz

2013-11-27 17:57:43 UTC

The difference between graphing and substitution is that by graphing is an estimation and by substitution is exact. The similarity is that almost always you get the same answer.

Jorge Huerta

bhuerta — 2013-11-27 17:58:28 UTC

The differences between graphing and subsitution are that in graphing you get an estimate of the answer while in substituting you get the exact answer. Graphing is usually much more complex and should only be done when both equations are in slope intercept form. The similarities are that you can get similar answers in both.

Lauren Fonseca

2013-11-27 17:58:43 UTC

The similarities of graphing and substitution are that both are used to find the value of a system of equation. The differences is that one requires more work than the other.

Camila Mencia

2013-11-27 17:58:53 UTC

Graphing and substitution are similar because: -Both can solve the same problems

- You need to find x and y variables

-Both give you the same answer in three different systems and solutions

Graphing and Substitution are different because:

- Graphing requires more accuracy and time.

- Substitution is faster but needs more steps.

- You can use both methods to be 100% sure of your final answer.

I personally think substitution is better because it is more accurate and many times faster.

Víctor Hondoy

2013-11-27 17:58:56 UTC

Graphing and su bstituion are very different but both of them are able to get the right answer if done correctly. If we try to solve the equation by graphing it will take more time and by substituting is way faster and easier since a variable has already been given.

Olinto Perez

2013-11-27 17:59:04 UTC

the differences are the speed of solving the problem with certain format of equations, which apply mostly to substitution, although it is easier to do while graphing. They are similar in the fact that they may both be solved changing the format of equations.

Alejandro Escobar

2013-11-27 17:59:04 UTC

The difference between graphing and substitution are that if there is an equation with an isolated variable the substitituion is way more faster. In graphing it takes more time and is less accurate because graphing is based on estimation.

Ji Eun Kim

2013-11-27 17:59:30 UTC

The similarities are that they both are used to find the number of the variable. The differences is that graphing takes longer time to find, but the substitution takes less time to solve and it is easier to do.

Ivanna Hernandez

2013-11-27 17:59:33 UTC

The similarities are that the in at least one equation, the variable should be alone. The difference would be that graphing takes a lot of time and the answer is estimated.

Maggie Huang

2013-11-27 18:00:19 UTC

The difference between graphing and substitution is that graphing is an estimation and substitution is exact. The similarities are that both are use for finding the intersection of two lines.

Jae Cheol Lee

2013-11-27 18:00:30 UTC

The differences from the substitution and graphing is that:

Graphing you always make the equation in slope intercept form and then you plog the y intercept in the graph and then you graw the line by the slope.

The Substitution the equation should be isolated and you should replace the x value to the x in the equation or a y value in the y from the equation.

The similarities are that they both can be graphed and are all formed by equations.

Alejandra

2013-11-27 18:01:23 UTC

both: used to solve system of equations

-you need to find x and y

graphing: estimation

substitution: accurate, faster

Karla Guevara

2013-11-27 18:02:35 UTC

The advantage of using substitution is that it is faster than graphing and that you get the exact answer. The disadvantages of graphing are that it takes longer and you don't get the exact answer.