Consider the following system in unknowns x, y, z : x – 2y = 1; x – y + az = 2; ay + 9z = b. For which values of a does the system have a unique solution, and for which pairs of values (a,b) does the system have more than one solution? The value ofb does not have any effect on whether the system has a unique solution. Why?

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A: The line segment is with endpoints P(-3, 5) and Q(2, 2)To determine the length

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A: Please refer the attached image for complete solution. THANK YOU.

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