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3 years ago

What is the equation of the line that passes through the point (-1, -5) and has a slope of -2?

Mathematics

1 answer:

Kruka [31]3 years ago

8 0

Answer:

y = -2x -7

Step-by-step explanation:

y + 5 = -2 (x +1)

y + 5 = -2x -2 . move 5 to the other side by subtracting from both sides.

y = -2x -7

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Rate and Ratio Sipho paid 605,50 for 70litres of petrol.What did the petrol cost per litre.

amid [387]

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2 years ago

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Vera_Pavlovna [14]

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3 years ago

If f(x) and f^-4(x) are inverse functions of each other and f(x) = 2x+5, what is f^-1(x)?

miss Akunina [59]

For this case we must find the inverse of the following function:

$f (x) = 2x + 5$

Then, we follow the steps:

We change $f (x)$ by y:

$y = 2x + 5$

We exchange the variables:

$x = 2y + 5$

We clear the variable "y":

$x-5 = 2y\\y = \frac {x-5} {2}$

We change y for $f^{-1}(x):$

$f^{-1}(x) = \frac {x-5} {2}$

Answer:

$f^{-1}(x) = \frac {x-5} {2}$

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3 years ago

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Westkost [7]

Answer:

The customary system states that one pound is equivalent to sixteen ounces(oz).

Step-by-step explanation:

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7 0

3 years ago

Calculate the slope of the line that contains the points: (2, -3) and (6, -3)

Brilliant_brown [7]

Answer:

$\displaystyle m = 0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

Step 1: Define

Identify

Point (2, -3)

Point (6, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m = \frac{-3- -3}{6- 2}$
[Fraction] Subtract: $\displaystyle m = \frac{0}{4}$
[Fraction] Divide: $\displaystyle m = 0$

6 0

3 years ago