What are the answers for the highlighted ones? Across #9,27 Down #2,8,21,25

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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