[الشيمآء]

7y= -5x + 9
y= -5/7x+9/7
ميل العامودي = 7/5
y= m ( x - x1 ) + y1
= 7/5 ( x - 6) - 8
= 7/5x - 42/5 - 8
= 7/5 x - 42/5 - 40/5
y= 7/5x - 82/5