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3 years ago

What is the slope of the line that contains the points (9,-4) and (1,-5)?

Mathematics

2 answers:

marissa [1.9K]3 years ago

6 0

Answer:

Step-by-step explanation:

cupoosta [38]3 years ago

4 0

Answer: $\bold{D.\ \dfrac{1}{8}}$

<u>Step-by-step explanation:</u>

Plug the given coordinates (x₁, y₁) = (9, -4) and (x₂, y₂) = (1, -5) into the slope formula to find the slope (m):

$m=\dfrac{y_2-y_1}{x_2-x_1}\\\\m=\dfrac{-5-(-4)}{1-9}\\\\.\quad =\dfrac{-5+4}{-8}\\\\.\quad =\dfrac{-1}{-8}\\\\.\quad =\dfrac{1}{8}$

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The areas of two similar octagons are 4 m² and 9 m². What is the scale factor of their side lengths? PLZ PLZ HELP PLZ

Sergeu [11.5K]

Answer:

2 :3

Step-by-step explanation:

To take the scale factor from the area to length we take the square root of each

sqrt(4) : sqrt(9)

2 :3

5 0

3 years ago

Solve de system by elimination. x-5y=3 4x-4y=12

Anit [1.1K]

If we multiply the top equation by -4 we can get rid of the x so:

-4x+20y=-12

4x-4y=12

Add these up

16y=0

Y=0

X=3

7 0

3 years ago

{(1, -2), (-2, 0), (-1, 2), (1, 3)}

-Dominant- [34]

It is not a function because x repeats
Domain={1,-2,-1}
Range={-2,0,2,3}

Hope this helps

Have a great day/night

3 0

2 years ago

What is the equation of the line in slope-intercept form?

zvonat [6]

Answer:

D) y = -1/3x - 7

Step-by-step explanation:

This graph has a negative slope, so immediately you can eliminate A.

Let's find the slope first. One point is (0,-7) and the other can be (-3,-6).

(-6+7)/(-3-0) = 1/(-3) = -1/3

Because the slope is -1/3, you can eliminate C.

Let's look at the y-intercept next. When x = 0, y = -7.

5 0

3 years ago

For what values of a the following expressions are true: |a|=−a

Ymorist [56]

Answer:

Any negative number and 0 works for the expression.

Step-by-step explanation:

Looking at this type of equation, we know that either EVERY negative number and 0 or EVERY positive number and 0 will work for this equation, since nothing is being added and we're just working with absolutes/negatives.

Let's try a random positive number in the expression

$|6| = -(6)\\6 \neq -6$

So this positive number doesn't work, let's just test with another one.

$|9| = -(9)\\9 \neq -9$

So we know that positive numbers won't work with this expression.

Let's test 0 quickly, just to make sure.

$|0| = -0\\0 = 0$

So 0 works.

Let's try a few negative numbers now.

$|-5| = -(-5)\\5 = 5$

So yes, this does work. Let's try one more negative number.

$|-120| = -(-120)\\120 = 120$

This works. So, every negative number and 0 work with this equation.

Hope this helped!

6 0

3 years ago

Read 2 more answers