O b.y= -x Ocy=- O d.y is not a linear function of x QUESTION 9 Detemine whether the equation defines y as a linear function of x. If so, write it in the form y=mx+ 6. 6x+ y-7=0 Oay= -6x-7 O b.y=-6x +7...

Extracted text: O b.y= -x Ocy=- O d.y is not a linear function of x QUESTION 9 Detemine whether the equation defines y as a linear function of x. If so, write it in the form y=mx+ 6. 6x+ y-7=0 Oay= -6x-7 O b.y=-6x +7 O d.y is not a linear function of x QUESTION 10 A certain economy's consumpuon finction 1s given by the equation C6)=0.75x -5 where 18 the personal consumprion expenditure in billions of dollars and r is the disposable personal income in billions of de