anonymous
  • anonymous
rewrite the equation in slope-intercept form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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jdoe0001
  • jdoe0001
start at the beginning, and finish when done
anonymous
  • anonymous
What is the equation?
anonymous
  • anonymous
I don't know how to start it

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anonymous
  • anonymous
the equation is 4x + 5y = 15
anonymous
  • anonymous
OKay so slope intercept form is Y=mx+b. The letter B is the Y intercept, this means the point in the graph where the line goes through Y. Got it so far?
anonymous
  • anonymous
OK so you want to get Y by itself
anonymous
  • anonymous
So if you want Y on one side of the equation by itself what do you do?
jdoe0001
  • jdoe0001
yeap, solve \(\bf 4x + 5{\color{brown}{ y}} = 15\) for "y" see what you get
anonymous
  • anonymous
@jdoe0001 You got it from here?
jdoe0001
  • jdoe0001
well.. is too simple methinks, but I can keep an eye
anonymous
  • anonymous
do I subtract 4x from the left side?
anonymous
  • anonymous
so I did that and got: 5y = 15 -4x I think I'm suppose to divide 5 from all of the numbers & got: y = 3 -4/5x or y = 4/5x + 3 ????
jdoe0001
  • jdoe0001
well yes, divide by 5 thus \(\bf 4x + 5y = 15\implies 5y=15-4x\implies y=\cfrac{-4x+15}{5} \\ \quad \\ y=\cfrac{-4}{5}x+\cfrac{\cancel{15}}{\cancel{5}}\implies y=-\cfrac{4}{5}x+3\impliedby \textit{slope-intercept form}\) you'd put the "x" part first on the right-hand-side

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