# Find the value of the function y = 3x + 2.2 if x = 0, if x = -8, if x = 0.65.

September 22, 2021 | education

| 1. This function y = 3x + 2.2 cannot be simplified, therefore, to solve the expression, it is necessary to substitute the given values one by one and calculate the final result.

2. Let’s perform the first substitution of the value “x = 0” into the function:

y = 3x + 2.2;

y = 3 * 0 + 2.2;

y = 0 + 2.2;

y = 2.2.

3. Let’s substitute the second value:

y = 3x + 2.2;

y = 3 * (-8) + 2.2;

y = -24 + 2.2;

y = -21.8.

4. Let’s calculate the second value x = 0.65:

y = 3x + 2.2;

y = 3 * 0.65 + 2.2;

y = 1.95 + 2.2;

y = 4.15.

Answer: 1) 2.2; 2) -21.8; 3) 4.15.

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