To find the equation of this line, let's first find the y-intercept of the line which is the point where the line crosses the y-axis.
To find the y-intercept, we start at the origin.
We go 0 units to the left or right and 3 units down.
So that's (0, -3).
Now we can confirm that the y-intercept is -3.
So for any of the equations that have a y-intercept that's not -3, we can immediately eliminate them.
So we can eliminate y = -x - 1 and y = x + 1.
Now we have two equations left, y = 3x - 3 and y = -3x - 3.
Now we have to look at our line.
Remember that positive slopes go up and negative slopes go down so we can confirm that the equation won't have a slope of -3.
So therefore, the equation is y = 3x - 3.
