A new laptop cost 1100 and has a new book value of 375 after 2 years. Find the linear model V(t)=mx+b

Answer is in the photo. I can only upload it to a file hosting service. link below!

is.gd/qKzpBU

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c