Question

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

Answer 1

y = -0,7x+5, если y=-1

-1 = -0,7x+5

-0,7x = 5+1

-0,7x = 6

х = 6 / (-0,7)

х = -60/7 = -8 4/7

Answer 2

To find the value of x when y equals -1 for the function y = -0.7x + 5, you need to set y equal to -1 and then solve for x.

So, we have:

-1 = -0.7x + 5

Now, let's solve for x:

Subtract 5 from both sides:

-1 - 5 = -0.7x

-6 = -0.7x

Now, divide both sides by -0.7 to isolate x:

x = -6 / -0.7

x ≈ 8.57

So, when y is equal to -1, the value of x is approximately 8.57.