Question

the point (12,9) is included in a direct variation. What is the constant of variation?

Answer 1

1/2
3/4
1
2

Answer 2

the formula for direct variation is y=kx. The k is the constant. If you put the x and y values from the ordered pair and solve for k, you'll have the constant.

9=12k

Divide both sides by 12

9/12=k

simplify
k=3/4

Answer 3

@cutiecucu therefore constant is /4