| Yep.
y1 = kx + 36
and
y2 = 6nx + n^2.
y1 = y2 for all values of x; that means y1 and y2 coincide.
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In other words, straight line y1 is the same as straight line y2.
If two equations represent one line, then the slope and y-intercept of one is respectively equal to the slope and y-intercept of another:
k = 6n and 36 = n^2.
|n| = 6, n>0 => n=6.
k = 6*6 = 36.
k - n = 36 - 6 = 30
(y1 = y2 = 36x + 36) |