The first four terms of a sequence are shown on the graph below.

On a coordinate plane, points are at (1, negative 3), (2, 3), (3, negative 3), (4, 3).

What can be concluded about the sequence?
The common ratio of the sequence is 3.
The common ratio of the sequence is –1.
The common difference of the sequence is 6.
The common difference of the sequence is –6.

Step-by-step explanation:

Triangle PQR is given to be a right triangle, so the Pythagorean Theorem can be used to determine that PQ is the hypotenuse.

It is given that x^2 + y^2 =z^2 in triangle ABC, so AB = PQ.

The information shows that the triangles are congruent because their three sides are congruent. Therefore, to show that triangle ABC is a right triangle, we can use corresponding parts of the congruent triangles to show that BCA is a right angle.