<p>in the xy plane, the point (2, 5) lies on the graph of f(x), where f is a function. Which of the following must be a point of y=(x-1)</p>
<p>a) (1,5)
b) (2,4)
c) (2,6)
d) (3,5)
e) (3,6) </p>
<p>WHY IS IT D???</p>
<p>f(x-1) = y</p>
<p>Plug in x = 1, we get f(0), who knows what that equals.
Same with x = 2.</p>
<p>Plug in x = 3, we get f(3-1) = f(2) which we know from the problem = 5. So (3,5) is our point for f(x-1).</p>
<p>The best thing to do here is plug in… It saves time and energy…
As for the way, JB explained it smoothly… lol</p>
<p>Viewers of this thread may be confused by the typo in the original statement of the problem.</p>
<p>The corrected question is:</p>
<p>Which of the following must be a point of y=f(x-1)</p>
<p>JBIG994 shows how it’s done.</p>
<p>thanks guys! and sorry for the typo!</p>