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3 years ago

Find the distance between the points (-4, 10) and (-4, -8).

Mathematics

1 answer:

Evgen [1.6K]3 years ago

4 0

Answer:

18 units

Step-by-step explanation:

(-4 , 10) and (-4, -8)

Distance = $\sqrt{(x_{2}+x_{1})^{2}+(y_{2}-y_{1})^{2}}\\$

$= \sqrt{(-4-[-4])^{2}+(-8-10)^{2}}\\\\= \sqrt{(-4+4)^{2}+(-18)^{2}}\\\\=\sqrt{0 + 324}\\\\=\sqrt{324}\\\\= 18$

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Damm [24]

Answer:

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4 years ago

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3 years ago

write the equation of the line that passes through the vertex of the parabola y=-2x^2+12x-11 and the point (-2,47)

pshichka [43]

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$\bf \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{7}=\stackrel{m}{-8}(x-\stackrel{x_1}{3}) \\\\\\ y-7=-8x+24\implies y=-8x+31$

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4 years ago

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