What fraction are equal to 2/3?

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?