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10 questions from this quiz
Mx=xM\mathbf{x} = \mathbf{x}Mx=x
On the same line
Two equations
A specific invariant point
A line of invariant points
y=mx+cy = mx + cy=mx+c
y′=mx′+cy' = mx' + cy′=mx′+c
mmm (slope) and ccc (intercept)
Points unchanged; lines may change points
c=0c = 0c=0
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