Can someone help i have been asking for 2 hours

Flipping a point across the y axis, the y coordinate should flip signs (negative if it was positive before, and vice versa). So

reflection across y axis  =  (-1 5/7, 1).

Similarly, reflecting across the x axis, the sign will also flip. So

reflection across x axis  =  (1 5/7, -1).

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.