Y = mx + b slope(m) = -3 (6,-2)...x = 6 and y = -2 sub and find b, the y int -2 = -3(6) + b -2 = -18 + b -2 + 18 = b 16 = b so ur equation for this line is : y = -3x + 16
(a,7)......so y = 7......" a " is gonna be x
y = -3x + 16 7 = -3x + 16 7 - 16 = -3x - 9 = -3x -9/-3 = x 3 = x..........so " a " is gonna be 3 <===
