The following show a change of scale made by an architect in one of his drawings. old: 1 in. =16 cm. new: 1in. =2cm which is the change in scale factor from the old scale to the new scale?

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?