Write the equation of the line that passes through the points (7, 2) and (4, -9). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

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)

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2