SOLUTION: Beatriz thinks (1, -1) is a solution of y = 2x -1. Grace thinks it is not a solution. Who is correct? Explain your reasoning.

Question 585982: Beatriz thinks (1, -1) is a solution of y = 2x -1. Grace thinks it is not a solution. Who is correct? Explain your reasoning.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If (1,-1) is a solution, then x = 1 and y = -1 should satisfy the equation. Let's see if it does.

y = 2x -1

-1 = 2(1) -1

-1 = 2 - 1

-1 = 1

Since the equation is false, x = 1 and y = -1 do NOT satisfy the equation.

Therefore, (1,-1) is NOT a solution.
--------------------------------------------------------------------------------------------------------------
If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim
--------------------------------------------------------------------------------------------------------------
RELATED QUESTIONS
�70 is shared between Bruce and Wayne in the ratio 5 : 2. Wayne thinks he should get �28 (answered by josgarithmetic)

NEED ANSWERS ASAP SHOW WORK PLEASE I KNOW ITS LONG BUT PLEASE I REALLY NEED IT RIGHT NOW (answered by richard1234)

If a student thinks of a number form 1 through 50 what is the probability the number will (answered by richard1234)

I need to helpmy daughter with proportions she's at a summer program. She needs to solve (answered by Tatiana_Stebko)

One way to remember something is to explain it to another person. Suppose that you are... (answered by AnlytcPhil)

beatriz and ashley are running a 200-meter race. Beatriz is running at an average speed... (answered by ikleyn,Alan3354)

Hi, I am a mom who is trying to help my 11 year old with a math problem. The question is (answered by Alan3354)

is (-1,2) a solution of y=... (answered by jim_thompson5910,Earlsdon)

Is (1,-3) a solution of... (answered by rapaljer,lenny460)