Which table shows a proportional relationship between x and y

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.