In standard form, Ax+By=C, where A, B, and C are integers and A is non-negative. Convert the equation y=5/6x+7/4 to standard form

Which pair of angles are vertical angles? ∠1 and ∠4 ∠1 and ∠2 ∠2 and ∠4 ∠2 and ∠3

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

How do you do the foil method with polynomials?