Step 1: \ \

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The point $\"\"$ . \ \

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The line equations are \ \

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$\"\"$ \ \

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$\"\"$ \ \

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Solve $\"\"$ for $\"\"$ . \ \

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$\"\"$ .

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Substitute $\"\"$ in $\"\"$ . \ \

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$\"\"$

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Multiply each side with negative one. \ \

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$\"\"$ . \ \

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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The intersecting point of $\"\"$ and $\"\"$ is $\"\"$ . \ \

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Step 2: \ \

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The slope of $\"\"$ and $\"\"$ is $\"\"$ . \ \

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Substitute $\"\"$ and $\"\"$ in $\"\"$ .

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The slope of $\"\"$ is $\"\"$ \ \

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$\"\"$

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The slope of line $\"\"$ is $\"\"$ . \ \

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The slope of $\"\"$ is $\"\"$ . \ \

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$\"\"$

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The product of two slopes is $\"\"$ , then those lines are perpendicular. \ \

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$\"\"$ .

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The line $\"\"$ and $\"\"$ are perpendicular. \ \

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Solution: \ \

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The intersecting point is $\"\"$ .

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The line $\"\"$ and $\"\"$ are perpendicular.

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