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castortr0y [4]
3 years ago
8

Choose the equation that matches the graph a.y=* b.y=-x c. y = 4x d. y = -4x

Mathematics
1 answer:
andre [41]3 years ago
4 0

Answer:

y = - 1/4 x

Step-by-step explanation:

Look for the slope of this graph.

Take for an example of a point. Let's take (-4,1) and (0,0)

Now let's see how many downs and rights needed to go from (-4,1) to the origin (0,0).

As you can see, it goes 1 down and 4 rights.

So now you know the slope of the line which mean you can choose one of the choices now.

1 down, means negative one (-1), will be a numerator of the slope fraction and 4 right, meaning positive four (4), will be a denominator of the slope fraction.

<em>Note: This method is only available when you see two easy points to determine. In most cases you have to do the math using the slope formula.</em>

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Hope this helps

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Find the exact value in the picture above
fomenos

Answer:

A and B

Step-by-step explanation:

You can take a look at a unit circle to find the solution to this problem (see below).

\cos^{-1}\left( \dfrac{\sqrt{2}}{2} \right)= \\\\\\\pm \dfrac{\pi}{4}= \\\\\\\dfrac{\pi}{4}, \dfrac{7\pi}{4}

Hope this helps!

7 0
3 years ago
Find f(-10).
marysya [2.9K]

Answer: -75

Explanation: In this problem, we're given the function f(x) = 7x - 5 and we're asked to find f(-10).

To find f(-10) or the value of the function when <em>x = -10</em> we simply substitute -10 in for <em>x</em> in our function.

So we have 7(-10) - 5 or -70 - 5 which equals -75.

So f(-10) or the value of the function when <em>x</em> <em>= 10</em> is -75.

Since your answer to this problem was <em>a</em>, your answer is correct.

8 0
3 years ago
Jared is going to plant 20 small plants around the edge of a circular garden that is 8 feet in diameter. If he spaces the plants
Hatshy [7]

Answer:

The space between the plants is approximately 1.26ft

Step-by-step explanation:

Given

Circular Garden

Number of plants = 20

Diameter of garden = 8ft

First, the circumference of the garden needs to be calculated; This is so because the plants that will be placed at the edge of the garden will occupy the circumference of the circle.

Calculating the circumference....

Circumference = 2πr

Where r = radius

r = ½ * diameter.

r = ½ * 8ft

r = 4ft

So,

Circumference = 2π * 4

Circumference = 8π ft

Given that the plants will be spaced evenly.

The distance between them = Circumference ÷ Number of plants

Distance = 8π/20

Distance = 0.4π ft.

Solving further to get actual distance (take π as 22/7)

Distance = 0.4 * 22/7

Distance = 8.8/7

Distance = 1.2571428571 ft

Distance = 1.26ft (Approximated)

Hence, the space between the plants is approximately 1.26ft

3 0
3 years ago
Sela's piano lesson starts at 4:45 pm the lesson is 30 mins long . When does her lesson end ?
MArishka [77]

Answer:

5:05

Step-by-step explanation:

6 0
3 years ago
Find slope (-1,4) (1,-1)
devlian [24]
The slope is 1/2 or m= 1/2
3 0
3 years ago
Read 2 more answers
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