The points A(-2;-9) and B(1;5) both lie on the parabola y = ax² + bx+c where a, b and c are constants. The line y = -x +
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The points A(-2;-9) and B(1;5) both lie on the parabola y = ax² + bx+c where a, b and c are constants. The line y = -x +
The points A(-2;-9) and B(1;5) both lie on the parabola y = ax² + bx+c where a, b and c are constants. The line y = -x + 1 is a tangent to the parabola at x = -1. Which of the following gives the solution for the constant b?.
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