The function is given by the formula y = 5x-7. Find; a) the function value corresponding
| June 26, 2021 | education
The function is given by the formula y = 5x-7. Find; a) the function value corresponding to the argument value equal to -4; b) the value of the argument at which the value of the function is 9.
y = 5x – 7
The value of the argument is the value of the variable x, and the value of the function is the value of the variable y.
a) Substitute the given value of the argument x = -4 into the function:
y = 5 * (-4) – 7 = -27.
b) Substitute the given value of the function y = 9 into the formula and solve the resulting equation:
5x – 7 = 9
5x = 16
x = 16/5
x = 3.2.
Answer: a) -27; b) 3.2.
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