Question

ДАМ 10 ДЕСЯТЬ БАЛОВ, ПОМОГИТЕ СРОЧНО!!! Знайдіть значення аргументу, для яких значення функції у = 5х + 2 дорівнюе -8.А -38Б -1,2В -2Г 2​

Answer 1

у = 5х + 2

y — это функция;

x — аргумент.

Решение:

Подставим  у= -8

-8 = 5х + 2

-5х = 8 + 2

-5х = 10

   х = 10 : (-5)

  х = - 2  

Ответ: В  -2

Answer 2

Finding the Value of the Argument for a Given Function

To find the value of the argument for which the value of the function \( u = 5x + 2 \) equals -8, we can use the following steps:

1. Set Up the Equation: We can set up the equation \( 5x + 2 = -8 \) to represent the given condition.

2. Solve for x: By solving the equation, we can find the value of x that satisfies the given condition.

Let's solve the equation \( 5x + 2 = -8 \) to find the value of x.

Solution:

The given equation is \( 5x + 2 = -8 \).

Subtracting 2 from both sides of the equation, we get:

\( 5x = -8 - 2 \)

\( 5x = -10 \)

Dividing both sides by 5, we find:

\( x = -2 \)

So, the value of the argument for which the value of the function \( u = 5x + 2 \) equals -8 is x = -2.