160 is the first because 1 inches 20 but it says 2 inches so at 40+40+40+40
and the 2nd part is yes he is correct because he converted the inches into feet so i think he is also correct
Given :


Now, Substituing the value of y in equation (ii) :








Now, substituting the value of x in equation (i) :




Answer:
-9
Step-by-step explanation: a negative multiplied or divided by a positive will give you a negative answer
Answer:
a negative slope
Step-by-step explanation:
With what? I might be able to help