Choose a variable to isolate and what it is equal to in the system of equations below.
2x = y + 3
4y = 3x-1
A. 2y = x-3
B. y = 2x + 3
C. 4y = 3x-1
D. y = 2x-3

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