(See diagram) The gradient of the line joining the origin to the point A is 1/2. The distance between A and the origin is sqrt 2
205. What are the coordinates of A?
1 answer:
Answer:
(42, 21) or (–42, –21)
Step-by-step explanation:
let A(x, y), A on line 2y = x
distance
x² + y² = 2205
(2y)² + y² = 2205
y² = 441
y = ±21
x = ±42
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