What is the y-intercept of this function?

f(x) = 2(x − 7)2 − 32

Ineed with number 17 i don’t get it at alll

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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