Answer:
(-4,6) is the vertex
Step-by-step explanation:
because it's either the lowest or highest point on the graph.
Answer:
15 feet
Step-by-step explanation:
The ladder is the hypotenuse of a right triangle, with the legs being 9 ft and 12 ft long (see the picture).
To solve for the length of the ladder, use the Pythagorean Theorem.

Answer: perimeter is 14 units
Explanation:
You could use the distance formula to find the lengths of segments AB, BC, CD, and DA; or you could graph rectangle ABCD and note that you can count out the spaces to find the lengths of each side. Option 2 is easier in my opinion. Check out the diagram below. The horizontal portion is 2 units and the vertical part is 5
perimeter = 2*(length+width)
perimeter = 2*(5+2)
perimeter = 2*7
perimeter = 14
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