y=(1/4)x represents a slope-intercept equation. You graph it by inserting a value for x, like 8, and then solving the equation to see what y equals. In this instance, you can see that if x=8, then y=(1/4)*(8) and therefore, y=2. So, you graph x=8 and y=2 for a single point. To get a second point, insert another x value, like 4, and that will lead to another y value; 1. The 2 points here are (8,2) and (4,1); to get the line, simply draw a line that goes through both the points.
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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