A rectangle is graphed on the coordinate grid. Which equation represents a side that is perpendicular to side d?

A) y = 2 x + 5
B) y = -2 x + 5
C) y = 1/2 x - 5/2
D) y = -1/2 x -7/2

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4

I’m stuck on this equation, anyone got the answer?