Find number K such that line y=6x + 4 is tangent to parabola y= x^2 + k


This is reply by AI


The logic of this question is that a line becomes a tangent to a curve when the lines slope is equal to the curve slope at some point

slope of parabola = dy/dx = 2x
slope of line = dy/dx = 6
2x=6 , so x=3
when x=3, y = 22

as line touches parabola, x and y should be equal on both curves
22 = 9 + k
k=13


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