Question

find four solution at the equation:-2x-y=4

Answer 1

Answer:

Let x=0

2(0)-y=4

y=-4

let x=1

2(1)-y=4

-y=4-2

y=-2

let x= -1

2(-1)-y=4

2+y=4

y=2

let x= 2

2(2)-y=4

4-y=4

y=0

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Answer 2

Answer:(0,-4), (1,-6), (2,-8), (3,-10)

Step-by-step explanation:

-2x - y = 4

Let x = 0,

-2(0) - y = 4

0 - y = 4

- y = 4

y = (-4)

Let, x=1

-2(1) - y = 4

-2 - y = 4

- y = 6

y = (-6)

Let, x=2

-2(2) - y = 4

-4 - y = 4

-y = 8

y = (-8)

Let, x=3

-2(3) - y = 4

-6 - y = 4

-y = 10

y = (-10)

So, the four solutions of -2x - y = 4 are (0,-4), (1,-6), (2,-8) and (3,-10).