If d= the number of dogs, which variable expression represents he phase below? the sum of number of dogs and the 6 cats

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.