Can someone please help me! i really need it!

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

Which function has the same domain as y=2x

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.