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Pavlova-9 [17]
3 years ago
8

Write the slope-intercept form of the equation through (4, 2) perpendicular to y=4x-4

Mathematics
1 answer:
Snezhnost [94]3 years ago
5 0

Answer:

y = -1/4x + 3

Step-by-step explanation:

y=mx+b is the slope-intercept form, which your equation y=4x-4 is already in.

To find the perpendicular line, you must take the <u>negative reciprocal</u> of the slope.

y = -1/4x + b

Your "b" will not be the same as the given equation, since the y-intercepts will not be the same. Therefore, you must solve for it using the point given.

Plug in (4, 2) [general: (x, y)] to the corresponding spots in y = -1/4x + b.

(2) = -1/4(4) + b

2 = -1 + b

b = 3

Now that you know m and b, you can plug all the values back into the form y = mx+b.

**Remember that y and x are never plugged back in! You need two variables to have a linear line

y = -1/4x + 3 is the answer.

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3 years ago
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Elina [12.6K]

Answer:

13.448, rounded off: 13.5 ft

Step-by-step explanation:

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Where r = radius, C = circumference.

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2 years ago
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A car run 3/4 mile per minute another car can run 4/5 mile per minute.what is the difference in speed in miles per hour?
dybincka [34]

Answer:

3 miles per hour

Step-by-step explanation:

We need to subtract the two numbers to find the difference in speeds

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16/20 - 15/20

1/20  

The car going 4/5 miles per minute is going 1/20 miles per minute faster than the car going 3/4 miles per minute.

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1/20 miles per minute * 60 minutes / hour

60/20 miles/hour

3 miles/ hour

The car going 4/5 miles per minute is going 3 miles per hour faster than the car going 3/4 miles per minute.

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3 years ago
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valentina_108 [34]

Answer:

13

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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