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16. Because if y=8 then the question becomes 8+8. Which equals 16.
It is 8
y=4x2+3x+8
(1, 9)
y=6x-16 y=-2x+8
7x + y = 8 Subtract 7x from each side of the equation: y = -7x + 8
x = 2y = 4
6 + y = 8 y = 8 - 6 y = 2
19 + y
x = 8 and y = 0
y = 6
x=1 y=7
x=4 y=4