Question

http://prntscr.com/acl9uy Is this correct?

Answer 1

the graph is given & we need to find the eqn from it. This will be the first step.

y=m x+c
m=-110/55=-2
c=110

therefore,
y=-2x+110 this is the eqn.

Answer 2

putting x=50,we get y=10.so u r absolutely correct