Two lines are represented by the equations below. Line 1: x−2y+6=0 Line 2: 3x+6y−18=0 Determine which line could be represented by y=−1/2x+3.

Plz hurry evaluate the expression a+b where a=8 and b=19

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.

Vertical angles must check all that apply