HELP ON AREA PLZ HELP

Two lines parallel to a third line are parallel to each other. always sometimes or never

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9