1. The problem statement, all variables and given/known data Use matrix multiplication to ﬁnd the 2×2 matrix P which represents projection onto the line y =√3x. Can you suggest another way of ﬁnding this matrix? Which vectors x∈R2 satisfy the equation Px = x? For which x is Px = 0? 2. Relevant equations Dot product of vectors 3. The attempt at a solution 1. I used matrix multiplication to get (1 -√3) * ¼ (√3 3), which I know is correct 2. You can also determine this graphically, by following the same process and plotting it on a Cartesian plane. 3. This is where I'm stuck. I think my problem is notation, because is set up an equation: (1 -√3) * ¼ ° (√3 3) = (x) (y) =(x,y) This means that (x, y) can be represented by the matrix: ¼ * (x -√3y) (√3x 3y) , just using convention. However, the model answer is (1) λ(√3) I know λ = x. Can someone please lead me through going from the 2x2 matrix to the vector?