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3 years ago

PLEASE HELP ILL GIVE BRAINLIEST! PLEASE PUT X AND Y PLOT POINTS! x-3y=3 2x+9y=11

Mathematics

1 answer:

Anestetic [448]3 years ago

6 0

Answer:

( x, y ) = ( 4, 1/3)

Step-by-step explanation:

x - 3y = 3

2x +9y = 11

1. substitute the value of x

x= 3 + 3y

2x + 9y = 11

2. solve equation

2 (3 + 3y) +9y = 11

3. substitute the value of y

y = 1/3

4. solve equation

x = 3 + 3 x 1/3

x = 4

5. check solution

(x, y) = ( 4, 1/3 )

check x ----> 4 - 3 x 1/3 = 3

check y ------> 2 x 4 + 9 x 1/3 = 11

for x----> 3=3

for y----> 11=11

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