Answer:
Equation of movement y(t)

Amplitude: 1 inch
Period: 0.628 seconds
Step-by-step explanation:
If there is no friction, the amplitude will be the length it was streched from the equilibrium. In this case, this value is 1 inch

The period depends on the mass and the spring constant.
The formula for the period is:

The model y(t) for the movement of the mass-spring system is

Its 75 because you at the 2 variables and then subtract them by 180 so 180-105=75
No solution as they are parallel lines. so, inconsistent
make the y int -4 because it passes through (0,-4). to make perpendicular, apply same slope to new equation but change sign