The slope intercept form of a line is:
Where
m is the slope
b is the y-intercept (y-axis cutting point)
Now,
we want line parallel to y = 3x (line).
THis line has slope of "3".
We know parallel lines have equal slopes.
So, our line will have:
Slope = 3
Now, the y intercept is given as -1. So that is b.
So,
b = -1
Thus,
The equation of our line is: