The equation of this line is written in Slope-Intercept Form, which looks like so:-
y=mx+b
In this formula, m stands for the slope of the line, and b stands for the y-intercept.
Please remember that the slope is the line's rise (the amount of units we move up, or "rise" divided by its run (the amount of units we move left or right, and the y-intercept is the point where the line intersects the y-axis. (0, b)
Also, please notice that m is the coefficient of x, and b is the constant.
Therefore, the slope of the line is equivalent to -4, and the y-intercept is (0, -3).