i really, really, really need help
posted by andrea .
what coordinate point is the solution to the system?
{3x+2y=8
{xy=1
(2,1)
please don't think i just made that up, it's correct. you have to use substitution, when you do solve for x and y, you get: x= y+1 and y=x1, plug in y for 3x+2y=8 and you get: y=1, then plug in "1" everywhere there is a y and you get: x=2.
Respond to this Question
Similar Questions

Algebra 1 HELP PLZ!!!
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 PLz HELP!! I'M NOT BOB BUT I CAN HELP ITS REALLY SIMPLE ALGEBRA X + Y = 4......EQN 1 X  Y = 2.....EQN 2 From EQN 2, let x = 2 + y Substitute that … 
Algebra question
When you solve a system of equations by the substitution method, how do you determine whether the system of equations is dependent? 
Math
I need to express the following in equivalent form: m2/m^25m+6 , 2x+6/x^26x27 , a^2+a/a^2+2a+1 , 2w+1/2w^2+2w+1 , 8Z+6Z^2/9z^216 I really don't understand how I can do this if the denominator is smaller and I just don't see how … 
Math  help really needed
I'm sorry to double post; I don't want to seem impatient, but I really need help with this. Prove each idenity. 1+1/tan^2x=1/sin^2x 1/cosxcosx=sinxtanx 1/sin^2x+1/cos^2x=1/sin^2xcos^2x 1/1cos^2x+/1+cosx=2/sin^2x and (1cos^2x)(1+1/tan^2x)= … 
AlgebraI really need help, please?
I have to solve sqrt(2x7) >=5 answers would be x>=16 x>=7/2 7/2<=x<=16 x<=16 I don't get this concept at all and I have 20 of these kinds of problems for homeowrkcan someone direct me how to start or give me an … 
AlgebraII
I really stuck on binomial theorem and I have a whole worksheet due Monday How do I solve (x+5y)^4 I need to really understand thisplease explain the steps so I can learn from it and then use it to do the other problems 
chem acids and bases
sorry to take up your time again, acids and bases just really confuse me, i'd really appreciate your help again. "What is the pH at the end point for the titration of 0.20M HNO2 by 0.20M NaOH? 
I really need help!
Hi, I really need instructions. Can someone please tell me how to make a coordinate plane and a rectangle on the plane in Microsoft Excel 2013 please? 
PreCalculus
Solve the system of equations using matrices. Use Gaussian elimination with backsubstitution. x + y + z = 5 x  y + 3z = 1 4x + y + z = 2 I really need help.. 1 1 1 5 1 1 3 1 4 1 1 1 2 I've done so many different methods to … 
Math
Please help! I would really appreciate it. I only have the answer to think first question. I don't know if it's correct. x + 5 = 18 (1 point) 5 or –5 13 or –13***** 18 or –18 23 or –23 y + 4 < 1 (1 point) −5 …