Question

What is the equation of the given line in standard form? Use integer coefficients.

y = 5/7x - 12

A. -5x + 7y = -12

B. -5x - 7y = -84
C. -5x + 7y = -84
D. 5x + 7y = -84

Answer 1

@tanya123

Answer 2

the answer is C because -5x + 7y = -84, add 5x to both sides, and you get 7y = 5x - 84. so what do you do next @bvbarmy17

Answer 3

im not sure

Answer 4

Hey I'm sorry about that. I had to step out for a bit. Do you still need help with this question?

Answer 5

well @bvbarmy17 divide by 7

Answer 6

The equation for standard form is Ax+By=C
- Ax cannot be negative
- no fractions if possible

Answer 7

y = 5/7x -12

Subtract Ax from both sides.
-5/7x + y = -12

Multiply both sides by 7.
7(-5/7x + y) = 7(-12) = -5x +7y = -84

Ax cannot be negative, so multiply both sides by -1
-1(-5x +7y) = -1(-84) = 5x -7y = 84

But what is odd is that I don't see the correct answer....so I guess you would just back up a step ("the multiplying both sides by -1" step) and go with C. -5x + 7y = -84.
But remember Ax should NOT be negative.

Answer 8

I know my response was late, but I thought I still might try and help.

Answer 9

lol thanks alot u did help

Answer 10

Glad to hear that.
I shouldn't be away from the computer anymore for at least a few hours, so if there are any more questions, I should be able to help with those.

Answer 11

awsome thank u alot