Question

A function f is defined by f(x) = 2x-5. Write down the value of f(7) and f(-3)​

Answer 1

Answer:

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Answer 2

f(x) = 2x-5

Thus, f(x) at x = 7 is:

f(7) = 2(7) - 5

= 14 - 5

= 9

and, f(x) at x = -3 is:

f(-3) = 2(-3) - 5

= -6 - 5

= -11

Hence, f(7) = 9 and

f(-3) = -11