Answer:
x=8/3
y= -20/9
Step-by-step explanation:
4X + 3Y -4 =0
Linear egquations must in

so 4X + 3Y =4
THEN
3X + 9Y = - 12
next use calculator to solve it or you can use traditional way
F(x)=(2x²+1)-(x²-7) or f(x)=2x²+1-x²+7
Combine like terms/Distribute the subtraction(negative) sign
f(x)=(x²+8)
Answer:
All rational numbers less than 7
Step-by-step explanation: