If the line passing through the points and is tangent to the curve

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

If the line passing through the points

(-1, 8)

and

(0, 6)

is tangent to the curve

y = \frac{a^2}{x-1}

, then

a^2

equals (a) 2 (b) 4 (c) 1 (d) 8