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4 years ago

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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Which sequences have a common ratio of 1/4

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4 years ago

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:

Front
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:
$(a*a)+(a*-b)+(b*a)+(b*-b)$

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

$=a^2-b^2$

Alternative Method (My Prefered Method)
$(a+b)(a-b)=a(a+b)-b(a+b)$

Use Regular Distributive Property.
$a(a+b)-b(a+b)$

$a*a+a*b-b*a+-b*b$

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

$a^2-b^2$

Hope this helps.
-Benjamin

6 0

3 years ago

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PLZZZZZZZZ HELP ME ON THIS PLZZZZZZ

Mandarinka [93]

Answer:

A x= -3

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

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3 years ago

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