Linear Functions

Hello this is the exercice of math about linears functions

1)Witch is the function G(x)

g(x)=3x+5

g(x)=4x+7

1. find with the calculus if C[-3;-5] is in g(x)

2. Dress the variation’s table of f(x) and g(x)

4)If x=2 find f(x) with f(x)=x³-2x²+4

5)is h a linear function  h(2)=4 and h(3)=6 Find the expression of h: