Which type of transformation creates an image not congruent to the original shape?

Renita analyzed two dot plots showing the snowfall during the winter months for city a and for city b. she found that the median snowfall is 5 inches less in city a than in city b. the mean snowfall is about 2 inches less in city a than in city b. which explains why there is a difference in the measures of center for the sets of data?

Find the slope of the line y =8/9x + 1.

For what value of (y) is 3^3/3^y =1/9