Answer is (A) 5/2
From the given data, we plot the graph as shown in the following figure:
Now, the midpoint of AC is
(a + 0)/2 = 1 ⇒ a = 2
(b + α)/2 = 2 ⇒ b + α = 4
The sides of a rhombus ABCD are parallel to the lines x – y + 2 = 0 and 7x – y + 3 = 0.
Equation of parallel diagonals is