5x - y = -383x + 4y =0(4,3)(-4,3)(4,-3)(-4,-3)

Mathematics

1 answer:

Mice21 [21]3 years ago

7 0

Answer:

(-4,-3)

Step-by-step explanation:

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Check the picture below.

$\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
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-------------------------------\\\\
\begin{cases}
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