Ineed to solve for y: -3x + y = 20

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

The number of lattes sold daily for two coffee shops is shown in the table: lattes 12 52 57 33 51 15 46 45 based on the data, what is the difference between the median of the data, including the possible outlier(s) and excluding the possible outlier(s)? 48.5 23 8.4 3

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?