Question

Для функции у=-0,7х+5 найдите значение x,при котором значение у= -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 = -1 for the function y = -0.7x + 5, you can set y equal to -1 and solve for x. Here's how you can do it:

y = -0.7x + 5

Setting y = -1:

-1 = -0.7x + 5

Now, let's solve for x:

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

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

x = -6 / -0.7

x ≈ 8.57 (rounded to two decimal places)

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