Determine equation given 3 points and 2 lines

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To determine the equation of line l2, first, the equation of line l1 must be established, which passes through the points (-3,2,3) and (-8,10,6). The lines are perpendicular, so the direction vector of l1 can be calculated and then used to find the direction vector of l2. Line l2 must pass through the point (7,49,25) and can be expressed in terms of its direction vector, which should be orthogonal to that of l1. The discussion emphasizes the need for a clear solution approach rather than vague suggestions.
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Homework Statement



Two coplanar lines l1 and l2 are perpendicular to each other, l1 passes through the points (-3,2,3) and (-8,10,6). Find the equation for l2 if it passes through the point (7,49,25)

Homework Equations





The Attempt at a Solution


determine the equation of l1 and use the dot or cross product?
 
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What you have under "The attempt at a solution" is NOT an attempt at a solution! If you think you neeed to find the equation of the line l1, the find it! What is the equation of that line? What must the equation of any line through (7, 49, 25) look like?
 

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