216/8= 27. X= 27. Subtract you divide
Okay, I understand. You found the correct answer. I won't get points. Sniffle.Sniffle.
1. linear equation
2. rearrange the equation so 4y = 12 - 3× and then divide both sides by 4 to get:
y = 3 - 3/4×
3. equation of a straight line / linear equation
4. gradient is + 3
5. not sure sorry
6. 3x = 12 - 4y. Divide each side by 3 to get:
x = 4 - 4/3y
7. use y = 3 - 3/4x by doing and x and y table. So when x = 1, y = 3 - 3/4 (1) (replace the x which the x value you've chosen). Then plot.
8. Make up any problem such as weather, food, etc.
Hope that helps !
Answer:
x= -2 and 9
Step-by-step explanation:

factorize it
- 18 = 2×3×3
TO MAKE IT 7
3×3=9
9-2 =7

x(x+9)-2(x+9)=0
x-2=0 ,x+9=0
x =2 x=-9