Math Problem Statement
Solution (make a sketch yourself): The constants in front of x and y give the coordinates of a normal vector to the line: ~nl = 2 3 . This is then a direction vector for k (with k as in Method 1.11), and since we know that k goes through Q, we can write k in parameter form: k : x y = 1 1 + t 2 3 = 1 + 2h 1 + 3h , t ∈ R. To find the intersection, this is inserted for x and y in the equation for the line: 2(1 + 2t) + 3(1 + 3t) = 6 ⇒ 4t + 9t = 1 so t = 1 13 and that gives the point: N = (1 + 2 1 13 , 1 + 3 1 13 ) = ( 15 13 , 16 13 ).
Solution
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Math Problem Analysis
Mathematical Concepts
Linear Algebra
Parametric Equations
Vector Geometry
Formulas
Parametric form of a line: (x, y) = (x_0, y_0) + t(v_x, v_y)
Line equation: 2x + 3y = 6
Substitution method for solving parametric and standard form equations
Theorems
Intersection of parametric and standard form lines
Solving systems of linear equations
Suitable Grade Level
Undergraduate (first-year level) or advanced high school students
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