Question

Help, pretty please? Which value of y forms the solution of the system defined by y = 11 x + 1 and 11 x + 12 y = 12?

Answer 1

Start with 11x + 12y = 12 and plug in y = 11x + 1


11x + 12y = 12

11x + 12(11x + 1) = 12 ... replace every y with 11x + 1

now solve for x

Answer 2

Ahhhhh,it's one of those problem,s..

Answer 3

substitution is one way to do it, yes

Answer 4

elimination is another (you have to rearrange things though)

Answer 5

I got x=0 :/

Answer 6

143x+12=12
x=0...

Answer 7

good, x = 0 is correct

Answer 8

now use this to find y

Answer 9

you can plug x = 0 into any equation with x,y in it

y = 11x + 1 is the easiest to work with since y is already isolated

Answer 10

y = 11x + 1

y = 11(0) + 1 ... replace every x with 0

y = ??

Answer 11

y=1

Answer 12

good

Answer 13

together, the solution is (0,1)

ie x = 0, y = 1

Answer 14

much appreciated!

Answer 15

you're welcome