3 years ago

Which Ine has a slope of - 1/2.? line a line b linec line d

Mathematics

1 answer:

slavikrds [6]3 years ago

6 0

Answer:

Line B

Step-by-step explanation:

Rise over Run, rise -2 run 1.

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Step-by-step explanation:

Let be $\vec u = (2,-3)$ , its unit vector is determined by following expression:

$\hat {u} = \frac{\vec u}{\|\vec u \|}$

Where $\|\vec u \|$ is the norm of $\vec u$ , which is found by Pythagorean Theorem:

$\|\vec u\|=\sqrt{2^{2}+(-3)^{2}}$

$\|\vec u\| = \sqrt{13}$

Then, the unit vector is:

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