Step-by-step explanation: The equation of the line is written in the slope-intercept form, which is: y = mx + b, where m represents the slope and b represents the y-intercept.
The answer is y=-4x+5. We could find that the intercept crosses (2,-3) and (1,1). So use the y=mx+b, let y=-3 and 1 and x=2,1. We could know that m=-4 and b=5.