The ordered pairs (2, –21) and (5, –45) are solutions to which of the following equations?

a. (x, y) -> (x - 4, y - 2)
b. (x, y) -> (x + 4, y - 2)
c. (x, y) -> (x + 4, y + 2)
d. (x, y) -> (x - 4, y + 2)

pls

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm