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\begin{array}{ll} x^{2}=4 p y & \text { Standard form of upward-facing parabola with vertex }(0,0) \\ x^{2}=4(1.7) y & \text { Substitute } 1.7 \text { for } p . \\ x^{2}=6.8 y & \text { Multiply. } \end{array}