Which of the following equations, when graphed in the zy-coordinate plane, is perpendicular to y 1 – 2 and passes through (3,-4)?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?