Answer:

Step-by-step explanation:
Given equation:

Divide both sides by 4:

Subtract 1/4 from both sides:


Simplify:

Answer: Y=5
Step-by-step explanation:
Your line has no slope. It is a horizontal line
Answer: 2π/3
Step-by-step explanation: At 2π, three cycles have been completed. The period is the length of one cycle.
Measure from peak to peak.
Another way to look at it is to measure the first cycle between 0 to π. One cycle has been completed at 2/3 the distance between 0 and π.