Let (a) Show that x1, x2, and x3 are linearly dependent. (b) Show that...

Let

(a) Show that x₁, x₂, and x₃ are linearly dependent.

(b) Show that x₁ and x₂ are linearly independent.

(c) What is the dimension of Span(x₁, x₂, x₃)?

(d) Give a geometric description of Span(x₁, x₂, x₃).