Question

Solve using elimination please:
-6y = -2x − 10
-3x + 9y = 15

Answer 1

i think x = 58/105 but im not sure better get it checked

Answer 2

yeah thats not it haha nice try though :)

Answer 3

dayum it XD well ur in 12th right??

Answer 4

a -2, 1
b infinitely no solution
c no solution
d 4,3

Answer 5

yes i am

Answer 6

if u have to go by elimination method...what u need to do is...take one equation and make it in the form x=........ and then substitute the x in the next equation

Answer 7

i honestly have no idea

Answer 8

no that's the substitution method @shrutipande9
in the elimination method you either add or subtract the equations to get the answers

Answer 9

thank you

Answer 10

-6y = -2x − 10 ............(1)
-3x + 9y = 15 ..............(2)
First, lets put equation (1) into standard form by adding 2x to both sides, giving us:
2x -6y = -10 ...............(3)
Do you follow so far?

Answer 11

yes

Answer 12

Good! So our two equations are now:
2x -6y = -10 ...............(3)
-3x + 9y = 15 ..............(2)
The next step is to make the coefficients of x in both equations equal and opposite. This can be done by multiplying both sides of equation (3) by 3, and by multiplying both sides of equation (2) by 2, giving us:
6x - 18y = -30 ..........(4)
-6x +18y = 30 ..........(5)
As you can see, equations (4) and (5) are basically the same. Therefore we cannot find a solution by using elimination.

Answer 13

thank youuuuu

Answer 14

You're welcome :)

Answer 15

theres something wrong with the qyestion...I think
both eqns seem to be multiples of the same eqn

Answer 16

my bad you already said that :s

Answer 17

Note that answer choices (a) and (d) are both solutions. There are infinitely many solutions.

Answer 18

thanks