from pointLine import *
 
def calcSlope(x1,y1, x2,y2):
    slope = (x2-x1)/(y2-y1)
    return slope
 
def calcPointOnLine(y, m, x, b):
    if  y == (m*x)+ b:
        return True
    else:
        return False
 
print "Point is on a Line? Program"
 
line1 = [(1,7), (7,19)]
x1 = line1[0][0]
x2 = line1[1][0]
y1 = line1[0][1]
y2 = line1[1][1]
 
slope1 = calcSlope(x1,y1,x2,y2)
yIntercept = y1 - (((y2 - y1)/(x2 - x1))(x1))
 
p1 = Point(3,11)
pointY1 = p1.y
pointX1 = p1.x
 
print "Point(3,11) is on line", line1, ":", \
      calcPointOnLine(pointY1, slope1, pointX1, yIntercept)
 
p2 = Point(4,11)
pointX2 = p2.x
pointY2 = p2.y
 
print "Point(4,11) is on line", line1, ":", \
      calcPointOnLine (pointY2, slope1, pointX2, yIntercept)

Traceback (most recent call last):
  File "C:\Users\Me\assignment.py", line 22, in <module>
    yIntercept = y1 - (((y2 - y1)/(x2 - x1))(x1))
TypeError: 'int' object is not callable

yIntercept = y1 - ( ( ( y2 - y1 ) / ( x2 - x1 ) ) * ( x1 ) )