Question

6x+5y=-15 into slope intercept form using y=mx+b

Answer 1

*=multiplication /=division

6x+5y=-15

6x+5y+15=0

6x+15=-5y

6x/6 +15/6= -5y/6

x+2,5=-0,83333..y

0,83333..y= -1x-2,5 ---> That's your formula

Answer 2

solve for x
6x+5y=-15
subtract 6x from both sides
5y=-6x-15
divide both sides by 5
y=-6/5x-3