Prove that the equation x^2+px-1=0 for every p has two different solutions

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.

Could someone me with this question i’ve been stuck on it for 20 minutes