(Help Asap!) What is the equation of the line shown in the graph?

M=x+-3

this should be correct. let me know if it's in  a different form.

y = mx+c

m being the gradient

c being the y - intercept

for this graph there is no gradient therefore the equation of this line is just

y = -3 because -3 is the y - intercept

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people