Question

Функция задана формулой y=2x-1. найти значение x, при котором значение y равно -19

Answer 1

-19=2x-1
2х=-18
х=-9
Ответ. х=-9

Answer 2

To find the value of x when y is equal to -19, you can set y to -19 in the equation y = 2x - 1 and solve for x.

So, we have: -19 = 2x - 1

To solve for x, isolate x on one side of the equation. First, add 1 to both sides: -19 + 1 = 2x - 1 + 1 -18 = 2x

Next, divide both sides by 2 to get x alone: x = -18 / 2 x = -9

So, when y is equal to -19, the corresponding value of x is -9.