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2 years ago

Solve -5√x = -15A. x =7B. x = -7C. x = -9D. x = 9

Mathematics

1 answer:

kondor19780726 [428]2 years ago

5 0

-5√x = -15
√x = -15/-5
√x = 3
x = 3&2
x = 9
answer is D. x = 9

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3 years ago

How do I find the y intercept in a fraction

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Both functions have the same slope

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$\begin{gathered} y=mx+b \\ \text{where m is the slope and b is y-intercept} \end{gathered}$

The formula to calculate the slope is the following:

$m=\frac{y_2-y_1}{x_2-x_1}$

The points are (-6, -9/2) and (4,3), replacing:

$m=\frac{3-(-\frac{9}{2})}{4-(-6)}=\frac{3+\frac{9}{2}}{4+6}=\frac{\frac{15}{2}}{10}=\frac{15}{20}=\frac{3}{4}$

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Now, for b

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replacing:

$\begin{gathered} 3=\frac{3}{4}\cdot4+b \\ b=3-3 \\ b=0 \end{gathered}$

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Therefore, the true statements are:

• Both functions have the same slope

• The linear equation does not have a y-intercept

• The table and the grahp express an equivalent function

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7 months ago