Think about a graph symmetric with respect to the y-axis. how do the coordinates of the points on the right half of the graph compare with the corresponding coordinates on the left half? analyze a graph symmetric about the origin in a similar manner. what do you notice?

See discussion below.

Step-by-step explanation:

By definition, for a graph symmetric with respect to the y axis, we have that:

(x, y) is a point on the graph if and only if (-x, y) is a point on the graph.  Thus, if (-x, y) is a point on the left half of the graph (note that x > 0), then (x, y) is a  point on the right half of the graph, and if (x, y) is a point on the right half of the graph, then (-x, y) is a point on the left half of the graph.  

For a graph symmetric with respect to the origin, by definition, (x, y) is a point on the graph if and only if (-x, -y) is a point on the graph.  Thus, if (x, y) is a point on the graph in the 1st quadrant (x>0, y>0), then (-x, -y) is a point on the graph in the 3rd quadrant.  If (x, y) is a point on the graph in the 4th quadrant (x>0, y<0), then (-x, -y) is a point on the graph in the 2nd quadrant.  

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all