Correct Answer: Option C

Explanation

If the point of intersection is (1, -2), it implies that x = 1 and y = -2 when the two equation are solved simultaneously.
∴ substitute x = 1 and y = -2 in any of the equations
2y - k x + 2 = 0
2(-2) - k(1) + 2 = 0
-4 - k + 2 = 0
-4 + 2 = k
-2 = k

There is an explanation video available below.

• What are the male and female reproductive hormones in animals? Answer this

  3 Answers   ·   Agricultural Science   ·   11 hours ago
• What is the meaning of agricultural sciences? Answer this

  2 Answers   ·   Agricultural Science   ·   3 days ago
• Does WAEC give Calculator to student for there exam? Answer this

  2 Answers   ·   Mathematics   ·   3 days ago