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3 years ago

Which line shows the graph of y = 4x - 5 reflected over the y-axis?

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

5 0

Answer:

The line y = -4x - 5 shows the reflection over the y-axis.

From the attached graph, the blue line i.e. y = -4x-5 represents the reflection over the y-axis.

Step-by-step explanation:

When we reflect a line function over the y-axis, all we need is to negate the x-coordinate or value of 'x', while y-coordinate or y-value remains the same.

Given the function

y = 4x-5

replace x with -x

y = 4(-x) - 5

y = -4x - 5

Thus, the line y = -4x - 5 shows the reflection over the y-axis.

From the attached graph, the blue line i.e. y = -4x-5 represents the reflection over the y-axis.

From the graph, it is clear that that that x-coordinate of y = 4x-5 is negated.

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snow_tiger [21]

Answer:

1/2

Step-by-step explanation:

theoretical probability of a coin flip is always 50% heads, 50% tails

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3 years ago

Flying against the wind, a jet travels 2160 miles in 3 hours. Flying with the wind, same jet travels 6000 miles in 6 hours. What

marissa [1.9K]

Answer:

The velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

Step-by-step explanation:

Let x be the rate of the jet in still air and y be the rate of the wind.

Given:

Velocity against wind, a jet travels 2160 miles in 3 hours.

Velocity against wind $=\frac{2160}{3} = 720 miles/hour$

Flying with the wind, same jet travels 6000 miles in 6 hours.

Flying with the wind $=\frac{6000}{6} = 1000 miles/hour$

As such its velocity against wind is $x-y$

and with wind is $x+y$ therefore

$x-y=720$ ------------(1)

$x+y=1000$ ---------------(2)

Adding equation 1 and 2.

$2x=1720$

$x=\frac{1720}{2}$

$x=860$

Put x value in equation 2

$860+y=1000$

$y=1000-860$

$y=140$

Hence velocity of jet in still air is $860miles/hour$ and velocity of wind is $140miles/hour$ .

8 0

4 years ago

I need HELP ASAP! It’s due today

Vikki [24]

Answer:

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Step-by-step explanation:

Since one and a half bear produces one and a half cub, then 6 bears will produce 6 cubs in one and a half days.

We need to find 7 days, though but we have the rate for six bears for 1.5 days which 6 bears one a half day.

What is the rate for a day?

6/1.5 =

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3 years ago

Read 2 more answers

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LenKa [72]

Answer:

25m + 10b = 400

Step-by-step explanation:

Total amount that can be earned = $ 400

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Amount earned per hour on babysitting = $10

Amount earned for mowing one lawn is $ 25, so amount earned for mowing m lawns will be $ 25m

Amount earned for one hour of babysitting is $ 10, so amount earned for babysitting for b hours will be $ 10b

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Using the values from above, we can set up the equation as:

400 = 25m + 10b

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Evgesh-ka [11]

Answer:

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Step-by-step explanation:

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