Practice problem
How many intersections does the graph y=f(x)y=f(x)y=f(x) of f(x)=xf(x) = \sqrt{x}f(x)=x have with its vertical translation y−10=f(x)y-10 = f(x)y−10=f(x)?
Zero
One
Two
Three or more
Type a concept, like “slope” or “photosynthesis”.