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IRINA_888 [86]
3 years ago
6

Need quick help with 2 math equations asap! Thanks!

Mathematics
1 answer:
solong [7]3 years ago
5 0

Before answering, keep in mind that parallel lines have equal slopes and perpendicular lines have negative reciprocal slopes. Each problem has you find the slope and then use that rule.


For line F, m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}}


Let xx_{1} = 7, xx_{2} = 9, yy_{1} = 13, yy_{2} = -3


m = \frac{-3 - 13}{9-7}


m = \frac {-16}{2}


m = 8


For line E, the calculations are similar and the slope is 3/5. The perpendicular line would have m = -5/3.

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Step-by-step explanation:

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Let's use substitution to solve for this system. In the second equation, let's write h in terms of s:

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Now, let's plug in 380 - s for h in the first equation:

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We can now solve for s fairly easily:

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