Question

find three different solutions for 3x+4y=7​

Answer 1

Answer:

3,1/2

Step-by-step explanation:

Given equation is 3x+4y=7

If x=1 put in equation we get

(i)3×1+4y=7

⇒3+4y=7

⇒4y=7−3

⇒4y=4

⇒y=1

(1,1)

If x=2 put in equation we get

(i)3×2+4y=7

⇒6+4y=7

⇒4y=7−6

⇒4y=1

⇒y=

4

1

(2,

4

1

)

If x=3 put in equation we get

(iii)3×3+4y=7

⇒9+4y=7

⇒4y=7−9

⇒4y=−2

⇒y=−

4

2

(3,−

4

2

)

Answer 2

Step-by-step explanation:

1) put x =0

then 3(0)+4y=7

0+4y=7

4y=7

y=7/4

2)put y=0

then3x+4(0)=7

3x+0=7

3x=7

x=7/3

3)you can either put x or y 1

put x is 1

3(1)+4y=7

3+4y=7

4y=7-3

4y=4

y=4/4

y=1