The solution to which system of equations has an y-value of 0? (A) x + 2y=-1; y = 3x + 3
(B) 3x – y=2; x + 2y=-1
y= 3x + 3; 2x + 3y=01
(D) 2x + 3y=0; x + 2y=-1

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

In what form is the following linear equation written y=9x+2

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)