Drawing Waves

In the first grid draw a sine wave that has an amplitude of ±2 units and a wavelength (λ) of 4 units

First grid: amplitude = ±2 units.   λ = 4 units	Double the λ of the first wave.
Double the amplitude of the first wave.	½ the λ of the first wave.
½ the amplitude of the first wave.	Double the frequency of the first wave.