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: