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Naya [18.7K]
4 years ago
9

How to find slope of line??? please help!!!

Mathematics
1 answer:
Hatshy [7]4 years ago
7 0

Answer: -1

Step-by-step explanation:

Find the two coordinates first.

In this case, they are (-4, 1) and (-2, -1).

Use the following formula to calculate slope:

\frac{y2-y1}{x2-x1}

Substitute in the coordinates:

\frac{1-(-1)}{-4-(-2)} = \frac{2}{-2} = -1

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8 0
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Use FOIL to explain how to find the product of (a + b)(a − b). Then describe a shortcut that you could use to get this product w
andriy [413]
Greetings!

FOIL stands for:

F
ront
Outside
Inside
Last

This tells which terms to multiply when using the Distributive Property.
(NOTE: Only applicable with 2-term Polynomials)

For Example:
(a+b)(a-b)

Multiply the Fronts of both Equations:
(a*a)

Multiply the Outsides of both Equations:
(a*a)+(a*-b)

Multiply the Insides of both Equations:
(a*a)+(a*-b)+(b*a)

Multiply the Lasts of both Equations:
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Simplify.
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Alternative Method (My Prefered Method)
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Use Regular Distributive Property.
a(a+b)-b(a+b)

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Simplify.
a^2+ab-ba+-b^2

a^2-b^2

Hope this helps.
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