(-2,3) reflected over y = x is (3,-2)
(400,-2) reflected over y = x is (-2,400)
All you do is switch the ordered pair.
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substitute x = y and y = -x Ex: y = x2 becomes -x = y2
You switch the x and y coordinates of the line. In other words, (x,y) ---> (y,x). I hope this helps! :)
the slope of the line is -2 over 1 or -2 because the equation is in slope intercept form. Where y=mx+b. M is refered to as the slope and b is the y intercept.
The slope is rise over run. If another line was parallel, the slope would be the same.
1/a = 1/b: cross multiplying gives a = b