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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1x is the same as 1x 4x is 4 x If you had 1 4 what do you get?

EmmaH
 one year ago
Best ResponseYou've already chosen the best response.0im having a lot of trouble with this Solve the system. y = 2  x and y = 4x + 7 (1, 1) (1, 3) (1, 3) (1, 1) no solution im prettyy sure tis no solution

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Right, so since 1  4 = 5, then x  4x = 5x

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now the system. Again, you have the two equations solved for y already, so use substitution.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Do you remember from the two previous systems what to do next?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Ok, let me see what you're up to since you're having trouble with it.

EmmaH
 one year ago
Best ResponseYou've already chosen the best response.0ok so i had 2x=4x+7 2x +2=4x+7+2 x=4x+9 x4x=9 now im stuck

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The 2 on the left side is positive, so you need to subtract 2 from both sides.

seanwalsh1984
 one year ago
Best ResponseYou've already chosen the best response.0x (so 1x) take away 4 more x's. It's like being $1 in the hole in the bank account. Spend four more bucks, and you are $5 in the whole, not $3. However... x  4x = 3x is interesting because: x  4x + x = 3x + x Then we have 4x = 3x Then as said above, if x = 0, then it is true, otherwise no. Hope this helps.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.12  x = 4x + 7 2  2  x = 4x + 7  2 x = 4x + 5 Now subtract 4x from both sides

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1x  4x = 4x  4x + 5 5x = 5

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356283149364:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now insert this value of x in one of the original equations, and solve for y

EmmaH
 one year ago
Best ResponseYou've already chosen the best response.0sorry i had to do something i do it one sec

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1y = 3. You're right, but remember x = 1, not x = 1

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1356283635553:dw

EmmaH
 one year ago
Best ResponseYou've already chosen the best response.0one more question The ordered pair (1, 1) is a solution of the system 4x + 2y = 2 and x + y = 2. True False

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Substitute the ordered pair into both equations. If it makes them both true, it's a solution.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.14x + 2y = 2 Try (1, 1) Is 4(1) + 2(1) = 2 ? 4  2 = 2? Yes. The ordered pair works in the first equation. Now try the second. x + y = 2 Is 1 + (1 ) = 1 true? 2 = 2. It's true. You are correct, (1, 1) is a solution.
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