What is the meaning of f(-4)?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?