The function is given by the formula y = 5x-7. Find the values of the argument for which y = -8; 0; 3.5.

univerkov | September 27, 2021 | education

The function is given by the formula y = 5x – 7. Find the values of the argument for which y = – 8; 0; 3.5.

From the formula y = 5x – 7 we derive x. We get: y = 5x – 7 => 7 + y = 5x => x = (7 + y) / 5.

Now, to find the values of the argument x, instead of y we put: – 8; 0; 3.5.

When y = -8; x = (7 – 8) / 5 = – 0.25.

When y = 0; x = (7 + 0) / 5 = 1.4.

When y = 3.5; x = (7 – 3.5) / 5 = 0.7.

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