2 years ago

use slope to determain weather or not quadrilateral ABCD with A(3, 1) B(6, -1) C(1, -3) and D(-2, -1), is a parallelogram

Mathematics

1 answer:

Ksivusya [100]2 years ago

8 0

Answer:

Step-by-step explanation:

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What is the slope??????

nikitadnepr [17]

Answer: The slope is 1/4.

Step-by-step explanation:

To find the slope, find two points on the line and find the difference in their y coordinates and divide it by the difference in their x coordinates .

(0,20) and (40,30)

Difference in y: 30 - 20 = 10

Difference in x: 40 - 0 = 40

Slope: 10/ 40 = 1/4

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3 years ago

I’m honestly confused on how to solve for k. please help.

stellarik [79]

Answer:

k=9

Step-by-step explanation:

$slope = \frac{y2 - y1 }{x2 - x1} \\ \frac{ - 5}{2} = \frac{ - 11 - k}{6 - ( - 2)} \\ - ( \frac{5}{2} ) = - ( \frac{11 + k}{8} ) \\ \frac{5}{2} = \frac{11 + k}{8} \\ 5 \times 8 = 2(11 + k) \\ 40 = 22 + 2k \\ k = \frac{40 - 22}{2} \\ k = 9$

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1 year ago

Use the Pythagorean Theorem to find the distance from Emma's house to the library.

AlladinOne [14]

Answer:square root 130

Step-by-step explanation:

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3 years ago

One number is eight more than twice another. If their difference is 25, what is the larger number?

Vladimir79 [104]

You can set up an system of equations
x=2y+8
x-y=25

Substitute x in to the second equation
2y+8-y=25
y+8=25
y=17

Substitute the y back in to the first equation.
x=2(17)+8=42

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3 years ago

Find the range of f(x)=-2x+6 for the domain {-1, 3, 7, 9}

velikii [3]

Answer:

8, 0, -8, -12

Step-by-step explanation:

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3 years ago