3x-3y+2z=11
3x+y-3z=-11
15x-y-2z=0

In the diagram, gef and hef are congruent. what is the value of x

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

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)