Question

If f(x) = −5x + 1, find f(−3). .

Answer 1

F(x) = -5x + 1

f(-3) = ?

subtitute x = -3 to the equation of the function:

f(-3) = -5 · (-3) + 1 = 15 + 1 = 16

Answer 2

f(x) = −5x + 1
putting the value of  x= -3 in above function 
f(-3)=-5x-3+1 
f(-3)= 15+1
=16.