Question

What is the midline equation of y = -5 cos (2πx + 1) - 10?
y =

Answer 1

Explanation:

The -5 makes the waveform amplitude of 5 the wave goes down to -5 and up to +5 BUT the -10 shifts the whole wave down 10

so it goes from -15 to -5 and the midline is then y = -10