Hal plzzz(06.04 lc)

what is the slope of a line of best fit if its equation is y = −8x + 9?
1/9
-1/8
−8
9

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David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?