Answer:
B. y = -6
Step-by-step explanation:
You can graph each line to see which one is horizontal since the y-axis is vertical. This would make the lines perpendicular since when a vertical and horizontal line meet, they form a 90-degree angle, which is by definition what perpendicular means.
Answer:
c
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
Answer:
Multiply both sides, then divide by 2.
Step-by-step explanation:
A triangle is either half of a square, or half of a rectangle. The two numbers given are the dimensions to the quadrilateral. Halving it gives you the area of a triangle.