Which does not show a direct variation between x and y?
a.
y = 0.5x
b.
y = 2x
c.
y = 9/x
d.
y = x/9

Allie answered 72% of the questions on her math test correctly. if she answered 18 questions correctly, how many questions were on the test?

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?