Check my answer? I needed to make these equations into y = mx + b form: 42x - 4y = 3, 21x = 2y - 3, and 21x = y + 3/2. My answer for #1: y = - 10.5x - (3/4). For #2: y = 10.5x + 1.5, For #3: y = - 21x + 3/2.

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Check my answer? I needed to make these equations into y = mx + b form: 42x - 4y = 3, 21x = 2y - 3, and 21x = y + 3/2. My answer for #1: y = - 10.5x - (3/4). For #2: y = 10.5x + 1.5, For #3: y = - 21x + 3/2.

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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  • phi
you are getting the wrong signs on answers #1 and #3
What do you mean by signs?
  • phi
42x - 4y = 3 can you do this one step by step ?

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Other answers:

I subtract 42x from both sides and get - 4y = - 42x + 3, then I divide everything by - 4, to isolate y and get y = - 10.5x - (3/4).
  • phi
sounds good, except -42x/-4 is not -10.5x
  • phi
minus over minus makes a positive
It's positive 10.5, just realized my mistake.
  • phi
that's what I meant by getting the wrong sign
Okay, thanks.
  • phi
for the last question 21x = y + 3/2 subtact 3/2 from both sides 21x - 3/2 =y or y = 21x -3/2
Thanks

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