Question

Для функции y=0,7x+5 найдите значение x, при котором значение y=-1

Answer 1

0,7х+5=-1;

0,7х=-6;

х=-6:7/10;

х=-6×10/7;

х=-6 4/7

Answer 2

To find the value of x when y = -1 for the given function y = 0.7x + 5, we need to solve the equation for x. So, let's set y equal to -1 and then solve for x:

y = 0.7x + 5 -1 = 0.7x + 5

Now, let's isolate x:

0.7x + 5 = -1 0.7x = -1 - 5 0.7x = -6

Finally, divide both sides by 0.7 to find the value of x:

x = -6 / 0.7 x ≈ -8.57

Therefore, when y is -1, the value of x is approximately -8.57.