Help with homework! do these equations represent an exponential function?

a1. y= 12• x^12

a2. y= 7x+ 3

b1. what does the equation,
y= 130(0.45)^x represent?

exponential growth, decay, or linear?

your answer is b.

step-by-step explanation:

the 2 points are: (3,1) and (6,6)

first, let's find the slope:

(6-1)/(6-3) = 5/3

then let's plug this into the point-slope formula:

y - 1 = 5/3(x - 3)

this is your answer! the below is just the simplified form.

y - 1 = 5/3x - 5

y = 5/3x - 4