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C is the mid-point of PQ, if P is (4, x)...

C is the mid-point of PQ, if P is (4, x), C is (y, -1) and Q is (-2, 4), then x and y respectively are

A

- 6 and 1

B

- 6 and 2

C

6 and - 1

D

6 and - 2

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The correct Answer is:
To solve the problem, we need to find the values of \(x\) and \(y\) given that \(C\) is the midpoint of segment \(PQ\). The coordinates of the points are as follows: - \(P(4, x)\) - \(C(y, -1)\) - \(Q(-2, 4)\) ### Step 1: Use the midpoint formula for the x-coordinates The x-coordinate of the midpoint \(C\) can be calculated using the formula: \[ C_x = \frac{P_x + Q_x}{2} \] Substituting the known values: \[ y = \frac{4 + (-2)}{2} \] ### Step 2: Simplify the equation for \(y\) Now, simplify the right-hand side: \[ y = \frac{4 - 2}{2} = \frac{2}{2} = 1 \] So, we have: \[ y = 1 \] ### Step 3: Use the midpoint formula for the y-coordinates Next, we apply the midpoint formula for the y-coordinates: \[ C_y = \frac{P_y + Q_y}{2} \] Substituting the known values: \[ -1 = \frac{x + 4}{2} \] ### Step 4: Solve for \(x\) Now, we will solve for \(x\) by multiplying both sides by 2: \[ -2 = x + 4 \] Now, isolate \(x\): \[ x = -2 - 4 = -6 \] ### Final Values Thus, the values of \(x\) and \(y\) are: \[ x = -6, \quad y = 1 \] ### Conclusion The final answer is \(x = -6\) and \(y = 1\). ---
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