What steps would you use to find the y-intercept of a line if given the information that the line has a slope of 4 and passes through (5, 23)?

I'm confused on this could anyone me and show me what i need to do to solve it.

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?