Which ordered pairs show y as a function of x? { (8, 1), (8, -1), (6, -1), (6, 2)}
((5, 0), (4, -1), (-5, -2), (4, -3)}
{(4, 7), (9, -6), (11, -6), (10, 7)}
{(2, 8), (1, 9), (9, 10), (9, 11)}

what "following statement"?

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.