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ZX-C2F87371AEone variable and systems of equations in two variables · 第 3 题
one variable and systems of equations in two variables · 原库模块 1 · Q3 原库参考解析
In the xy-plane, a line with equation 2y = 4.5 intersects a parabola at exactly one point. If the parabola has equation y = -4x2 +bx , where b is a positive constant, what is the value of b ?
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