Line A has a slope of -4 and passes through the point (-25,-10). Line B has x-intercept of 10 and y-intercept of 25. Determine the equation of the line perpendicular to line B and passing through (-20, 10).  answer: 2x-5y+90=0 Explain the process.

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
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Line A has a slope of -4 and passes through the point (-25,-10). Line B has x-intercept of 10 and y-intercept of 25. Determine the equation of the line perpendicular to line B and passing through (-20, 10). 

answer: 2x-5y+90=0

Explain the process. 

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