Writing the Equation of a Circle
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it's : X2 - X1 and Y2 - Y1,
not X1 - X2 and Y1 - Y2
because the two refers to the second point which you look at, after the first point on the x and y axis.
Wuzzi55 2 years ago 7
@Wuzzi55 he substitutes the values into what x1 and y1 would be anyway, so he still gets the correct answer. But it is confusing
TheMathsstudent 2 years ago 6