Question

iv- Identify the linear equation in two
variables. *
2x + 3x = 12
x - y = 9​

Answer 1

Answer:

$1)2x + 3x = 12 \\ 5x = 12 \\ x = \frac{12}{5} \\ = 2 \frac{2}{5}$

2) Given, πx+y=9

a) Put x=0, we have

π(0)+y=9⟹y=9

b) Put y=0, we have

πx+0=9⟹πx=9⟹x=π9 

c) Put x=1, we have

πx+y=9⟹π(1)+y=9⟹y=9−π

d) Put x=2, we have

πx+y=9⟹π(2)+y=9⟹y=9−2π

Hence, the four solutions of the given equations are: (0,9),(π9,0),(1,9−π),(2,9−2π)

Answer 2

Step-by-step explanation:

2) Given, πx+y=9

a) Put x=0, we have

π(0)+y=9⟹y=9

b) Put y=0, we have

πx+0=9⟹πx=9⟹x=π9

c) Put x=1, we have

πx+y=9⟹π(1)+y=9⟹y=9−π

d) Put x=2, we have

πx+y=9⟹π(2)+y=9⟹y=9−2π

Hence, the four solutions of the given equations are: (0,9),(π9,0),(1,9−π),(2,9−2π)