## MaeganR 3 years ago solve by graphing x + y = 3

1. Mathhelp346

Turn it into slop-intercept form, which is y=mx+b. m is the slope b is the y-intercept

2. Mathhelp346

*slope

3. MaeganR

So Y= 3x + b?

4. Mathhelp346

No

5. anonymous

x + y = 3 we know that the general form of slope is y=mx +c where m is the slope and c is the intercept and so , i am trying to make the given equation to look like the general form => y=(-1)x+3 find the points:|dw:1357702924977:dw|

6. MaeganR

My teacher is not doing that way, and I am so confused

7. Mathhelp346

Ok, so your equation is x+y=3 In order to turn this into slope-intercept form, you will subtract the x, leaving you with y=-x+3. Similar to y=mx+b, right? Then, 3=b(y-intercept) and the slope is -1. Slope is: $\frac{ rise }{ run }$

8. MaeganR

I am sorry there are two parts to the problem, the first is x + y=3 and 2x + 5y = 12

9. MaeganR

I am new at this and I totally apologize

10. Mathhelp346

Then, you just do the same. Except you would have to divide both sides by 5. |dw:1357703298547:dw|

11. MaeganR

Ok

12. Mathhelp346

|dw:1357703426599:dw|

13. MaeganR

Ok I knew you had to do something to both sides, but I was not sure what to do once I got a fraction

14. MaeganR

Thank you

15. Mathhelp346

You're welcome :)