A researcher is studying how effective a new disinfectant is in eliminating a certain strain of bacteria on hard
surfaces. She finds that the line y = -x +9 is a good fit for the data

a What kind of association does this graph show?

b. Explain in detail what the slope of the line tells you in this
situation

A researcher is studying how effective a new disinfectant is in eliminating a certain strain of bacteria on hard surfaces She finds that the line y x 9 is a goo class=