Question 34
Coordinate GeometryThe gradient of the line joining the points P(2, −8) and Q(1, y) is −4. Find the value of y.
- A.2
- B.4
- C.−4
- D.−3
Show the answer and explanation
Answer: C (−4)
Explanation
(y + 8)/(1 − 2) = −4, so y + 8 = 4 and y = −4.
The gradient of the line joining the points P(2, −8) and Q(1, y) is −4. Find the value of y.
Answer: C (−4)
(y + 8)/(1 − 2) = −4, so y + 8 = 4 and y = −4.