itsjustme_lol
Change the given equation into slopeintercept form. 4x – 3y = 12



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jiji501
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Do you know the equation for the slopeintercept form?

itsjustme_lol
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no this is a pretest so i havent learned it exactly yet

jiji501
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Ok!

jiji501
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The slopeintercept form is: y= ax+b

jiji501
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As you can see, we're trying to isolate the y on one side and bring everything else to the other.

jiji501
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The y is also positive and has only one of them ( So there is not 2y = ax + b for example)

itsjustme_lol
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ok

itsjustme_lol
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im still confused

jiji501
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Let's do it step by step. Can you make your y by itself? (Bring the x over)

itsjustme_lol
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ok. and no, i dont know how to do any of it. Im new to this kind of stuff and its confusing lol

jiji501
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I'll give you a simple equation x + 1 = 5

jiji501
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Would it be mathematically correct to say that x = 4?
Because
x+11 = 51

itsjustme_lol
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yes

jiji501
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Exactly! So it is the same thing here but we add something harder. We have to move variables to the other side as well!

jiji501
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4x 3y = 12
Would it be correct to say that
4x4x3y = 124x ???

jiji501
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So 3y = 124x?

itsjustme_lol
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ok but whats next?

itsjustme_lol
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3/2?

jiji501
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Well as you can see, we've already isolated the y. What we want to do is get only one y and to make it positive.

jiji501
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How do we get rid of the 3 in front of y?

itsjustme_lol
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divide it by 3?

jiji501
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By 3, close ;)

jiji501
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So now... y = ?

itsjustme_lol
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1

jiji501
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Well there is one y but I mean what is on the other side of y

jiji501
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what is 12/3 and 4x/3

itsjustme_lol
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4 is the first one, the other us a decimal 1.33 repeating

jiji501
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Correct. You could also leave it as a fraction.

jiji501
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So y = 4/3x 4

jiji501
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That would be your answer. 4/3 is the slope and 4 is the yintercept

pottersheep
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It has to be in y = mx + b form

itsjustme_lol
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itsjustme_lol
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so it would be D?

jiji501
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We just did it together....y = 4/3x 4

jiji501
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You said it yourself.... 4!!!

itsjustme_lol
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lol. sorry i meant C. thankyouuuu