Respuesta :

2a. y - y1 = m(x - x1)
m = (7-3)/(5 + 1) = 4/6 = 2/3
y1 = 7, x1 = 5
y - 7 = 2/3(x - 5)

2b. Slope intercept form: y = mx + b
y = 2/3(x -5) + 7
y = 2/3x -10/3 + 7
y = 2/3x - 10/3 + 21/3
Y = 2/3x + 11/3