Question

the solution of equations 2x-y=0 and 4y-8x=0 are;. a) (4,2). b)( 2,4). c) (-2,-4). d) (4,-2). ​

Answer 1

Answer:

The correct solutions are:

b) (2,4) and c) (-2,-4).

Explanation:

2x-y=0 and 4y-8x=0.

b) 2x-y=0 (x=2, y=4)

2×2-4=0

4-4 = 0

0=0.

4y-8x=0 (x=2, y=4)

4×4-8×2=0

16-16 = 0

0=0.

c) 2x-y=0 (x=-2, y=-4)

(2×-2)-(-4)=0

(-4)-(-4) = 0

(-4)+4 = 0

0=0.

4y-8x=0 (x=-2, y=-4)

(4×-4)-(8×-2)=0

(-16)-(-16) = 0

(-16)+16 = 0

0=0.

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