Well you can't change 4.1 into a decimal because it's already a decimal with a decimal point included in it, so there's really no point of asking that question when you've already done it yourself! Just wanted to notify you on that point.
In slope intercept form this is equal to y=3/2x+8. If you want it in decimal form it would be y=1.5x+8.
this question is not complete
Hello friend!
1/3(9x+12)=15
We move all terms to the left:
1/3(9x+12)-(15)=0
Domain of the equation: 3(9x+12)!=0
x∈R
We multiply all the terms by the denominator
-15*3(9x+12)+1=0
multiply elements
-45x(9+1=0