Question

Solve the following system of equations by graphing.

x + 2y = 4
2x + 4y = 8

What is the solution?

(4,2)

no solution

infinite solutions

none of the above

Answer 1

so its none of those

Answer 2

?

Answer 3

sorry would be (4,2)

Answer 4

notice how everything in the 2nd equation is double of the numbers in the first equation

Answer 5

its not (4,2) cause i had that before and i got it wrong

Answer 6

if you plug in 0 for x and then for y then you get 4,2

Answer 7

but this is supposed to be solved by graphing..

Answer 8

and i did get (4,2) and it is wrong

Answer 9

(4,2) is a solution, but it's not the only solution

Answer 10

so it should of been infinate solutions

Answer 11

yes, the reason being because the two equations are really the same equation

Answer 12

the second is just the first (but everything is doubled)

Answer 13

how so

Answer 14

oh gotcha

Answer 15

x + 2y = 4

2*x + 2*2y = 2*4

2x + 4y = 8

Answer 16

gotcha (:

Answer 17

so hat other soultions will u get

Answer 18

what ?

Answer 19

anything that satisfies x+2y = 4

Answer 20

so (0,2) is a solution

x+2y = 4

0+2*2 = 4

4 = 4

------------------------

(-2,3) is another solution

x+2y = 4

-2+2(3) = 4

-2+6 = 4

4 = 4

Answer 21

alright thanks (:

Answer 22

yw