b) Find the values of $t$, for which $(-1, t - 1)$, $(t, t - 3)$ and $(t - 6, 3)$ are collinear. c) State the vertex, focus and directrix of the parabolic equation: $y^2 - 24x + 6y - 15 = 0$.
Added by Juan H.
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To determine if three points are collinear, we can use the slope formula. The slope between two points (x1, y1) and (x2, y2) is given by (y2 - y1) / (x2 - x1). So, the slope between (~1,t - 1) and (t,t - 3) is [(t - 3) - (t - 1)] / (t - (-1)) = -2 / (t + Show more…
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