complete the equation of the line through (2,-2) and (4,1).
Accepted Solution
A:
slope formula : (y2 - y1) / (x2 - x1) (2,-2)....x1 = 2 and y1 = -2 (4,1)...x2 = 4 and y2 = 1 now we sub into the slope formula and solve for the slope slope = (1 - (-2) / (4 - 2) = (1 + 2) / 2 = 3/2
now we use y = mx + b slope(m) = 3/2 use either of ur points....(4,1)...x = 4 and y = 1 now sub into y = mx + b formula and find b, the y int 1 = 3/2(4) + b 1 = 6 + b 1 - 6 = b -5 = b