If y=1, x=3.
If y=2, x=6.
If y=3, x=9.
The line y=1/3x must run through the points
(3,1)
(2,6)
(3,9).
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y=x+1 there for answer is 2
y equals x-4 plus 2 is the same as y = x-2. You just translate the graph of y=x, 2 units to the right, OR 2 down.
A cubic function.
x = 1 is a graph of a straight line that touches the x-axis at 1 and extends infinitely up and down.
It is y = x + 4