Question

Функция задана формулой у=3х-25, найдите значение аргумента, при котором значение функции равно - 7

Answer 1

3x-25=-7

3x=25-7

3x=18

x=6

значение аргумента долдно быть 6

Answer 2

To find the value of the argument (x) when the function value (y) is equal to -7, we can set up the equation and solve for x.

Given function: y = 3x - 25

We want to find x when y = -7:

-7 = 3x - 25

Now, let's solve for x:

Add 25 to both sides to isolate the term with x:

-7 + 25 = 3x - 25 + 25

18 = 3x

Finally, divide both sides by 3 to solve for x:

x = 18 / 3

x = 6

So, when x is equal to 6, the value of the function y = 3x - 25 is -7.