A function y = 2x + 12 is given with the scope of definition D = R. At what values of x is the value of function y equal to 38?
| August 2, 2021 | education
In order to determine the value of x, substitute 38 (the value of y) instead of y in the function.
38 = 2x + 12.
To solve a linear equation, we transfer the numbers to the right side, to the left side of the expression with the unknown. When transferring a number from one part to another, we change the signs to the opposite.
2x = 38 – 12;
2x = 26;
x = 26/2;
x = 13.
Answer: x is 13 with y is 38.
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