Since 1 + 1 6= 0, this relation is not reflexive. Since
x + y = y + x, it follows that x + y = 0 if and only if y + x = 0,
so the relation is symmetric. Since (1, −1) and (−1, 1) are both in R,
the relation is not antisymmetric. The relation is not transitive; for
example, (1, −1) ∈ R and (−1, 1) ∈ R, but (1, 1) 6∈ R.
Angle two is 39° because of the law of congruent angles within two parallel lines
=<span><span><span><span>ab</span>+a</span>+<span>4b</span></span>+<span>4
Hope this helps (:</span></span>
Just use the equations x + y= 47 and 2x + 4y=138 to solve
Graph B is the correct answer.