Question

PLZ I REALLY NEED HELP 15 POINTS

Write the equation 8y = 1/2x – 0.8 in standard form. Identify A, B, and C.


480x + 5y = –48 where A = 480, B = 5, and C = -48



480x – 1y = –48 where A = 480, B = –5, and C = -48



5x – 480y = 48 where A = 5, B = –480, and C = 48



1x + 96y = 9.6 where A = 1, B = –96, and C = 0.8

Answer 1

5x -80y = 8 . . . . . . does not match any offered choice

(A, B, C) = (5, -80, 8)

Explanation:

The fractions 1/2 and 0.8 have a common denominator of 10, so we can multiply the given equation by that value to clear fractions:

80y = 5x -8

5x -80y = 8 . . . . . . add 8-80y

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Comment on possible typo

The third answer choice (5x-480y=48) matches an original equation of (8y = 1/12x - 0.8). We suspect a typo somewhere. (Multiply that equation by 60 and rearrange to get standard form.)