The surface area of a triangular prism is 18.5 square inches. What is the surface area of a similar solid that has been enlarged
1 answer:
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First find the equation of y.
Find the slope m.
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Pick one point, I'll pick (-3, 9). Insert coordinates in equation then compute n.
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The equation of a line y is:
.
The perpendicular line is same like the normal line except its slope m becomes:
.
The equation of a perpendicular bisector is thus:
.
Hope this helps.