Question

Write the equation y - 2 = 4(x + 5) in standard form.
A. 4x + y = 7
B. 4x - y = 3
C. 4x - y = -22

Answer 1

please

Answer 2

y-2=4(x+5),
y-2=4x+20,
y-2+2=4x+20+2,
y=4x+22,
-4x+y=22,
-1(-4x+y=22),
4x-y=-22. The answer is C. Does this make sense?

Answer 3

sort of.

Answer 4

how did it become negative?

Answer 5

I had to multiply the whole problem by -1 because the variable in the problem (-4x) was not supposed to be negative. -1(-4x+y=22), see? and then your answer is 4x-y=-22.

Answer 6

ohh i see.thank you.

Answer 7

Not a problem ^_^

Answer 8

P.S. Oh you may want to post this in the math section instead of the English next time.