Which relation defined by a graph is not a function

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Is there an x intercept in the equation 60*1.15^x

To decrease an amount by 16% what single multiplier would you use