Can someone plz help me

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Ofin . (2,4) (2,1) a. y= 2 b. x= 2 c. x= -2 d. y= 2x

21 type the correct answer in each box. if necessary, round your answers to the nearest hundredth the vertices of abc are a(2,8), b(16, 2), and c(6,2). the perimeter of abc is units, and its area is square units