PLS SOLVE THIS !!<3

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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

Solve the system of equations y= 3/2 - 1, -x+ y =-3