No, it is not in the solution area for the system.
The point only works in one of the inequalities.
It doesn't work in the inequality: y > -1/2x+ 3
We can put it in to test it:
-7 > (-1/2)3 + 3
-7 > -1.5 + 3
-7 > 1.5 This is a false statement, therefore it is not part of the solution.
Hello !
Okay so what you do is add 10 to the other side
2k - 10 +10 = 6 + 10
You would get ....
2k = 16
Next you divide 16 by 2 which is 8
and that means 8 is equal to k
K = 8
Let's say the price of one book is the variable x
Therefore, Alana is 5x and Petra is 4x
Angus bought 19x, but since he had a $10 discount, it is 19x-10
Combined, Alana and Petra is 5x+4x, but since it says Angus spent $5 more, it would be 5x+4x+5
Therefore, we get the equation:
19x-10=5x+4x+5
19x-10=9x+5
10x=15
x=15/10 or 3/2 which equals 1.5
Therefore, one book costs $1.5
