SAT Subject Test Mathematics Level 1

If  a   varies  directly    as  b,  then    a   is  equal   to  some    constant    times   b:

Now plug    in  b   =   10  and k   =   0.8:

a   =   kb  =   (0.8)(10)   =   8

24 . E

A   line    of  symmetry    is  a   line    along   which   you can “fold”  a   figure  such    that

every   point   on  one side    of  the fold    aligns  with    a   point   on  the other   side    of

the fold.   An  equilateral triangle    has three   lines   of  symmetry:

A   nonsquare   rectangle   has two,    a   nonsquare   rhombus has two,    and a

square  has four: