Determine if the equation x^2-y=1 defines y as a function of x

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!