Exponential Functions: Find the equation through the points A and B in the form y = a b x

Question 1:

A is (0,3) and
B is (2,48)
y = 3 × 4 x

Question 2:

A is (0,-5) and
B is (1,-20)
y = -5 × 4 x

Question 3:

A is (0,5) and
B is (2,125)
y = 5 × 5 x

Question 4:

A is (4,48) and
B is (5,96)
y = 3 × 2 x

Question 5:

A is (3,-108) and
B is (4,-324)
y = -4 × 3 x

Question 6:

A is (3,24) and
B is (5,96)
y = 3 × 2 x