Answer:
9(5x+7y)
Step-by-step explanation:
Answer:
x = 4, y = 0
Step-by-step explanation:
Two find x and y, we can simply solve one of the two equations for one of the variables, and substitute it into the other. That will provide one of the two values, which can then be plugged into either equation for the other value. Let's do it:
![2x - y = 8\\y = 2x - 8\\\\x + 3y = 4\\x + 3(2x - 8) = 4\\x + 6x - 24 = 4\\7x = 28\\x = 4\\\\y = 2x - 8\\y = 2(4) - 8\\y = 0](https://tex.z-dn.net/?f=2x%20-%20y%20%3D%208%5C%5Cy%20%3D%202x%20-%208%5C%5C%5C%5Cx%20%2B%203y%20%3D%204%5C%5Cx%20%2B%203%282x%20-%208%29%20%3D%204%5C%5Cx%20%2B%206x%20-%2024%20%3D%204%5C%5C7x%20%3D%2028%5C%5Cx%20%3D%204%5C%5C%5C%5Cy%20%3D%202x%20-%208%5C%5Cy%20%3D%202%284%29%20-%208%5C%5Cy%20%3D%200)
So x is equal to four, and y is equal to zero.
16 comment if you want me to explain
C
when you put all the equations into slope intercept form and then graph them, answer C will give you the exact same line that is already on the graph. for a system to have infinitely many solutions it would have to be two lines that are exactly the same because they are intersecting an infinite amount of times