Question

Знайти значення виразу y=2x-5, якщо х=1; 0; -1; -2.

Answer 1

Решение:

y = 2x - 5

при x = 1         y = 2 * 1 - 5

                       y = 2 - 5

                       y = -3  

при x = 0        y = 2 * 0 - 5

                       y = 0 - 5

                       y = -5

при x = -1        y = 2 * (-1) - 5

                       y = -2 - 5

                       y = -7

при x = -2      y = 2 * (-2) - 5

                      y = -4 - 5

                      y = - 9            

Answer 2

To find the values of the expression y = 2x - 5 for different values of x, simply substitute the given values of x into the expression and compute the corresponding values of y.

1. For x = 1: y = 2(1) - 5 = 2 - 5 = -3

2. For x = 0: y = 2(0) - 5 = 0 - 5 = -5

3. For x = -1: y = 2(-1) - 5 = -2 - 5 = -7

4. For x = -2: y = 2(-2) - 5 = -4 - 5 = -9

So, the values of the expression y = 2x - 5 for x = 1, 0, -1, and -2 are -3, -5, -7, and -9, respectively.