2. How can the graph be used to predict the output ſy-value) associated with an input of 312? 3. If you wanted an output of 7 for the rule y=-x+4. what would you need as an input?

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