If the distance from a point m on the parabola y = 4x2 to the focus is 1, then the ordinate of point m is () A. 1716B. 1516C. 78D. 0

If the distance from a point m on the parabola y = 4x2 to the focus is 1, then the ordinate of point m is () A. 1716B. 1516C. 78D. 0

According to the definition of parabola, if the distance from m to the focus is 1, then the distance from m to the collimator is also 1. The collimator of ∵ parabola is y = - 116, and the ordinate of ∵ m point is 1-116 = 1516