Solve for X geometry

Which expression is equivalent to −16y+13 ? −16(−y+13) 16(−y+2) −16(y+2) 16(−y+13)

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?