Sunday, August 2, 2009

In graphs and functions i need help with one example please?

it says plot each point on graph and then plot the points that are symmetric to the given point with respect t the (a) x-axis (b)y-axis and (c) origin. for example (-6,1)


how do you do this (not the plotting!) but plotting the points that are symmetric....what does that mean?!

In graphs and functions i need help with one example please?
A symmetric point would be a mirror image. Imagine having (-6,1), which is in the second quadrant.





If you were to find a symmetric point with respect to the x axis you would pretend to fold your graph paper in half on the axis. Wherever your first point touches the new side of the paper (3rd quadrant) is where your symmetric point lies. This would plot the point at (-6,-1)





to find symmetry with respect to the y axis, fold your paper along the y axis. the symmetric point would be (6,1)





the origin means that you would draw a line from the current point (-6,1) back to the origin. Now extend the line past the origin into the fourth quadrant. the symmetrical point would be (-6,-1).


No comments:

Post a Comment