9|4a + 4) = 36
I need help with this problem

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.

Find the slope of the line passing through a pair of points

Find the value of x for which line a is parallel to line b