These tables of ordered pairs represent some points on the graphs of lines m and n. Which system of equations is represented by lines m and n?

A. 2x−9y=187x−2y=14

B. x−3y=65x−y=10

C. x−8y=165x+2y=20

D.3x−4y=242x+3y=−6

Line m
x y
−3 −3
0 −2
6 0
Line n
x y
−3 −25
1 −5
6 20

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap