Please awnser and make sure it is right I will brainlist

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Average acceleration: i have no idea how to do this.