Answer: y=3x-1
Because:
You already the slope is 3 so: y=3x+b
You now have to find b and you have you answer. To do so, replace x and y with the point given to you.
So, 5=3(2)+b
Now you only need to isolate b:
5=3(2)+b
5=6+b
5-6=b
-1=b
Just plug that in and you have y=3x-1
