Write the equation of two lines passing through (3,10)

Give the equations of two lines passing through (3,\ 12) . How many more such lines are there, and why?

Write the equation of the line passing through (-3, 1, 2) and perpendicular to the plane 2y - z=3.

Give the equations of two lines passing through (3,\ 12)dot How many more such lines are there, and why?

Write the equation of the line passing through (-4,3) with slope 1/2 .

Write the equation of line passing through (3,-3) & (6,-6)

Write the equation of the line passing through the point (1,-1) and parallel to the line x+3y -4=0

Write the equation of the line passing through the points (3,-2,-5) and (3,-2,6).

Write the equation of the line passing through the pair of points (2, 3) and (4, 7) in the form of y=mx+c.