Monday

March 30, 2015

March 30, 2015

Posted by **Ren** on Saturday, October 16, 2010 at 12:01am.

Use a graph and table to solve each system. check your answer

{y+x=5

{3x-5y=-1

- Algebra 2 -
**Henry**, Saturday, October 16, 2010 at 3:02pmx + y = 5,

3x - 5y = -1,

I will use the elimination method which

eliminates 1 variable and allows me to solve for the other.

Step 1. Multiply both sides of the 1st Eq by -3 and add the 2 Eqs:

-3x - 3y = -15,

3x - 5y = -1,

0 - 8y = -16,

- 8y = - 16,

Step 2. Divide both sides by -8 and get:

y = 2.

Step 3. Substitute 2 for y in Eq 1

and solve for x:

x + 2 - 5,

x = 5 - 2,

x = 3.

Solution set:(x , y) = (3 , 2) = The

point where the 2 graphs will intersect.

To graph the Eqs, use the following

convenient points:

x + y = 5. (0 , 5) , (2 , 3) , (5 ,0).

3x - 5y = -1. (-2 , -1) , (3 , 2) ,

(5 , 3.2).

I hope this will help.

- Algebra 2 -
**Henry**, Saturday, October 16, 2010 at 3:10pmCORRECTION: The 1st Eq under Step 3

should read: x + 2 = 5.

**Answer this Question**

**Related Questions**

Algebra 1--Step-by-Step - Can someone show me how to solve these step-by-step? ...

math(algebra 1) - how do u answer this? please step by step *graph and check to ...

algebra - solve by using the quadratic formula prove your answer is correct by ...

Allgerbra - Please show me step by step how to Make a table of solutions for the...

Mathematics - I have three questions... Okay think of a 1-9 multiplication table...

Pre-Algebra [urgent!] - I can't find the solution to this problem; can someone ...

algebra 1 - can someone please help me solve the question and explain to me and ...

Algebra help - f(x)=x^3-4x^2-x+4 How do I find the x-intercept for this? This is...

Algebra help+check please? - Graph the function. Compare the graph with the ...

math - can someone explain step by step to solve system equations and example ...