exam Maths Puzzle Numerical Ability

create three unique equations where the discriminant is positive, zero, or negative using the quadratic formula to solve a quadratic equation ( ax^2 + bx + c=0) the discriminant is b^2-4ac

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(b^2+12b+11)*b+9/b^2+20b+99
Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b Help me please.

(-9,2);6x=7y+5