This question is in the review for the Dot Product section.QuestionHow many lines pass through the point (4, 5, 6) and are perpendicular to the vector (1, 2, 3) ? The follow-up question says to find the equation for the region that contains all the lines passing through (4, 5, 6) and perpendicular to (1, 2, 3).AnswerThe answer to the follow-up is in the linear form of the equation of a plane. So, I'm assuming that the answer is an infinite number of lines? But I do not actually understand the concept behind that. Any suggestions on how to approach this problem?