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2 years ago

Find an equation in slope-intercept form of the line that has slope 2 and passes through point (9,-2)

Mathematics

1 answer:

Marrrta [24]2 years ago

6 0

Answer:

y=2x-20

Step-by-step explanation:

y-y1=m(x-x1)

y-(-2)=2(x-9)

y+2=2x-18

y=2x-18-2

y=2x-20

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3 years ago

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3 years ago

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3 years ago

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Step-by-step explanation:

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3 years ago

A plane flew 525 miles in 1.75 hours. Find the average speed of the plane.

ale4655 [162]

We are trying to find the average speed of the plane, which is mph, or $\dfrac{\textrm{miles}}{\textrm{hour}}$ . Using proportions, we can find the average speed of the plane in mph:

$\dfrac{525 \,\, \textrm{miles}}{1.75 \,\,\textrm{hours}} = \dfrac{x \,\, \textrm{miles}}{1 \,\,\textrm{hour}}$

Use the information from the problem to create a proportion. Remember that we are looking for mph, so we will call that $x$ .

$\dfrac{525}{1.75} \,\textrm{miles} = x \,\textrm{miles}$

Multiply the entire equation by $1 \,\textrm{hour}$

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3 years ago