Write the quadratic equation whose roots are 1 and 3, and whose leading coefficient is 4

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Ineed to know the answer to this algebra question.

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6