Please help me with Math and show how you got the answer.

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

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)

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did