Please help me answer these 3 questions. Also, please EXPLAIN how you got the answer because sometimes people answer but don't explain it.

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?