1.in a proportion, the product of means is equal to the product of___________
A. proportion
B. extremes
C. ratio
D. equivalent ratios
2.what do we call when the other quantity increases, the other quantities increases as well
A. proportion
B. equivalent ratios
C. direct proportion
D. indirect proportion
3.is salary to the number of hours work, a direct proportion
A. yes
B. no
C. maybe
D. none of the above
4.we can solve direct proportion by___________rule?
A. division
B. subtraction
C. cross product
D. additon