A triangle is rotated 90° about the origin. Which rule describes the transformation?

(x, y) - (- , -y)
(x, y) - (-y, x)
(x, y) - (-y, -x)
(x, y) - (1, -x)

Arepresentative from plan 1 wants to use the graph below to sell health plans for his company. how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans? the scale on the y-axis could be changed to 0–100. the scale on the y-axis could be changed to 25–40. the interval of the y-axis could be changed to count by 5s. the interval of the y-axis could be changed to count by 20s.

Ef is a median of trapezoid abcd. the length of ab is 12, and the length of cd is 18. the length of bf is 4. what is the length of fc?

[tex]a + (3a - 2b) - (4a - 3b)[/tex]whats the answer to this ? ?