A line has gradient (or slope) 6 and passes through the points with coordinates (-1,6) and (7,a) find a

Answer 1

(x1,y1) (x2,y2)

(-1,6)=(x1,y1)

(7,a)=(x2,y2)

slope=(y2-y1)/(x2-x1)

6=(a-6)/(7 +1) or

6=(a-6)/8

48=a-6

48+6=a or 54=a