HELP.
Write y = –0.5x + 0.8 in standard form using integers.
a)5x – 10y = 8
b)5x + 10y = 8
c)–5x + 10y = 8
d)–5x – 10y = 8

Question

HELP.
Write y = –0.5x + 0.8 in standard form using integers. 
a)5x – 10y = 8
b)5x + 10y = 8
c)–5x + 10y = 8
d)–5x – 10y = 8

chaise · Answer

The answer is b.

Do you need help on working out how to achieve this answer?

anonymous · Answer

Yes, please. and thank you.

chaise · Answer

y = –0.5x + 0.8

If you take away 0.8 from both sides of the equation, and also take away y from both sides of the equation you get:

-0.8 = -0.5x - y

If you multiply every term in the equation by -10 you get.

8=5x+10y

The answer is b.

anonymous · Answer

Oh okay. I wasn't sure how to excatly start it. I understand how to do it, now. Thank you!

chaise · Answer

My please, best of luck :)