<p>Does anyone here have it?</p>
<p>just wanted to make sure if this was an error or not..</p>
<p>Page 554</p>
<p>"In function notation, f(6)=4 is the point (6,4).</p>
<p>Wouldn't it be the point (4,6)</p>
<p>sry bit confused over this..</p>
<p>No. The coordinate system (two-dimension at least) is in (x,y) notation. For example, a point 6 units to the right and 4 units up of (0,0) is (6,4). f(x) = y, so let's say the equation is</p>
<p>y = f(x) = 2/3 x</p>
<p>Then when x is 6, y = 4, so f(6) = 4 and the coordinate is (6,4).</p>
<p>When y = f(x), it means that y is a function of x. In other words, you do something to x to get y.</p>
<p>k thanks for the clarification</p>