Question

How do you make a table out of the system.

3x + 4y = 18
x + 3y = 11?

Answer 1

x + 3y = 11

x = 11 - 3y


3x + 4y = 18

3 * ( 11 - 3y ) + 4y = 18

33 - 9y + 4y = 18

-5y = 18 - 33

-5y = -15 Diwide both sides with -5

y = ( -15 ) / ( -5 )

y= 3

x = 11 - 3 y

x = 11 - 3 * 3

x = 11 - 9

x = 2

Proof:

3x + 4y = 18

3 * 2 + 4 * 3 = 6 + 12 = 11


x + 3y = 11

2 + 3 * 3 = 2 + 9 = 11