Answer:
y=-3x+4.
Explanation:
1) the slope can be calculated according the formula:
slope=(y_end-y_init)/(x_end-x_init);
2) according to the formula above:
slope=(3-1)/(0-1)=-3.
3) according to the given graph the interception is 4, then
4) finally, the required equation is y=-3x+4.