P(2, -1, 3), Q(8, 5, -6) and R(4, 1, 0) are the vertices of a
triangle. Show that PQ = 3PR.​

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

If a || b and e || f , what if the value of y ?

10 points? me . its important ‼️‼️