anonymous
  • anonymous
Two lines, R and M, are represented by the following equations: Line R: 2x + 2y = 18 Line M: x + y = 9 Which statement is true about the solution to the set of equations? It is (18, 9). It is (9, 18). There are infinitely many solutions. There is no solution.
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
please help
anonymous
  • anonymous
Okay, let's try and solve the system of equations by using elimination. How many times does the second equation go in the first?
anonymous
  • anonymous
i dont know

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anonymous
  • anonymous
Put the equation side by side one another. What do you have to multiply with x to turn into 2x? What do you have to multiply with y to get 2y and what do you have to multiply with 9 to get 18? 2x + 2y = 18 x + y = 9
anonymous
  • anonymous
2
anonymous
  • anonymous
Multiply the second equation by 2 then. 2(x + y = 9) It'll equal the first equation. If the second equation and the first equation are equal, what does that mean?
anonymous
  • anonymous
i dont know
anonymous
  • anonymous
It means that they're the same line.
anonymous
  • anonymous
I'm willing to help if you're at least willing to try.
anonymous
  • anonymous
ok
anonymous
  • anonymous
but i don't get what the answer will be
anonymous
  • anonymous
What do same lines have? Infinite solutions, no solution, or just one solution?
anonymous
  • anonymous
just 1 solution
anonymous
  • anonymous
Nope. Try again.
anonymous
  • anonymous
no solution
anonymous
  • anonymous
No. They have infinite solutions. Every single point is the same.

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