## anonymous one year ago rewrite the equation in slope-intercept form.

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1. anonymous

start at the beginning, and finish when done

2. anonymous

What is the equation?

3. anonymous

I don't know how to start it

4. anonymous

the equation is 4x + 5y = 15

5. 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?

6. anonymous

OK so you want to get Y by itself

7. anonymous

So if you want Y on one side of the equation by itself what do you do?

8. anonymous

yeap, solve $$\bf 4x + 5{\color{brown}{ y}} = 15$$ for "y" see what you get

9. anonymous

@jdoe0001 You got it from here?

10. anonymous

well.. is too simple methinks, but I can keep an eye

11. anonymous

do I subtract 4x from the left side?

12. 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 ????

13. anonymous

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