Question

Write 4 solutions for each of the following : a)2x+y=7
b)5x+y=10



pls give step by step answer​

Answer 1

Answer:

a) Given equation is:

2x+y=7

For x = - 1, we get

−2+y=7

⇒y=9

∴ (-1, 9) is a solution.

For x = 0, we get

⇒0+y=7

⇒y=7

∴ (0, 7) is a solution.

For x = 1, we get

⇒2+y=7

⇒y=5

∴ (1, 5) is a solution.

For x = 2, we get

⇒4+y=7

⇒y=3

∴ (2, 3) is a solution.

Hence, we have four solution (−1,9),(0,7),(1,5)and(2,3)

b) Solutions can be

x=0

then

5(0)-y=10

y=-10

(0,-10)

y=0

5(X)=10

x=2

(2,0)

x=1

5-y=10

y=-5

(1,-5)

y=1

5x-1=10

x=11/5

(11/5,1)