????????? yu thank yer formula is a line that hit differ line tween 2 points ??????
points: (1,3) & (2,7)
deltax=1, deltay=4, slope=4, angel=75.96 deg up from x-axis
midpoint=(1.5, 0.5)
line leng=4.123106
y=4x-1
###### other line: 3x+4y=9...or y=(9-3x)/4 or y=-0.75x +2.25
2 lines hit at (0.684211, 1.736844)