Determine whether y varies directly with x. if so, find the constant of variation k.
3y = -7 - 18
a. yes; 3
b. yes; -7
c. no
d. yes; 7/3
. maybe some explanation i don't get it.

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Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.