<span>Complete the following direct proof.
1) Triangles are the only polygons with three sides.
2) The polygon has three sides.
3) Thus, triangles are polygons.
</span>
Answer:
it should be (6,-7)
Test it on a 4 quadrant graph yourself if you do not have the same numbers.
"Undefined" slope means the line is vertical, of the form x = constant. The constant is the x-value of the point the line goes through.
C) x = 2