FORMULA Welcome to your FORMULA What is the value of x if y = 23 in the formula y = 4x+3? 4 5 6What is the value of b if a = -2 in the formula b = 2a-11? -14 -15 14What is the value of x if y = -5 in the formula 2x+3y = 23? 19 -19 4What is the value of v if u = 10, a = 3 and t = 2 in the formula u = v + at? 16 6 4Calculate the value of y when 15 22 -20Calculate the value of y when 6 14 -44Make a the subject of the formula A B CMake z the subject of the formula x+3= 2y+z z = x + 2y - 3 z = x - 2y - 3 z = x + 2y + 3Make y the subject of the formula 2x-10= 2y+4z y = 2x - 4z - 5 y = x - 2z - 10 y = x - 2z - 5Make a the subject of the formula 5a - 10b + 4c = 0 A B CMake z the subject of the formula A B Cy is directly proportional to x+5. When x is 4, y is 18. Express y in terms of x. y = 2x + 8 y = 2x + 10 y = 2x + 5a is directly proportional to When a is 1, b is 3. Express a in terms of b. A B Cx is inversely proportional to y-10. When x is 2, y is 12. Express x in terms of y. x = 4/(y + 1) x = 2/(y - 1) x = 4/(y - 1)a is inversely proportional to b+2. When a is 1, b is 5. Express a in terms of b. a = 7/(b + 2) a = 7/(2(b + 2)) a = 7/(b + 2)