The line perpendicular to $y = 2x + 5$ has slope:
A$-2$
B$\dfrac{1}{2}$
C$2$
D$-\dfrac{1}{2}$
Answer & Solution
Correct answer: D. $-\dfrac{1}{2}$
Perpendicular: negative reciprocal of slope. $-1/2$.
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Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE For [[1,2],[2,4]], the determinant equals:If A is invertible, |A^{−1}| equals:For a 3 × 3 non-singular A with |A| = 5, the value of |adj A| is:For a non-singular square matrix A of order n, |adj A| equals:For non-singular A, B of the same order, (AB)^{−1} equals:For a non-singular A, (A^{−1})^{−1} equals: