The equation of the line would be y = (1/2)x.
To find the equation of a line that is reflected through the line y = x, we just switch the x and y. Then, solve for y.
y = 2x
x = 2y
0.5x = y
I’m not to sure on how to answer you problem
987164 is in the ones place
3 is in the tens
0 is in the hundreds
2 is in the thousands