Amir is starting a stamp collection. After 3 weeks he has collected 35 different stamps, and after 9 weeks he has collected 105 different stamps. Which equation represents this direct variation?

6y=70x or 6y-70x=0;

Step-by-step explanation:

System of equations:

35=3k+b；  

105=9k+b;

Equation 2 minus 1 is 6k is equal to 70, k is equal to 70/6, plug in to equation 1 and b is equal to 0, so the original equation is y is equal to 70/6x.

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3