In order to find at what value of the argument the function given by the equation y = -5x + 11 takes a value equal to 0.2, we will compose and solve the equation.
So, we must substitute y = 0.2 into the equation of the function and solve the resulting equation with respect to the variable x.
0.2 = -5x + 11;
We got a linear equation. We group the terms with and without variables in different parts of the equation:
5x = 11 – 0.2;
5x = 10.8;
x = 10.8: 5;
x = 2.16.
At x = 2.16, the function y = -5x + 11 takes on a value of 0.2.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.