For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b?

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Answer 1 · 2016-09-01T18:19:07

$(x, y) = (2 b, 2 b + 7)$ $(x,y)=(2b, 2b+7)$ .

$f (x) = x + 7$ $f(x)=x+7$

When $x = 2 b$ $x=2b$ , we get, from the Defn. of $f$ $f$ ,

$y = f (x) = f (2 b) = 2 b + 7$ $y=f(x)=f(2b)=2b+7$

Now, the Graph of $f = {(x, y) : y = f (x)}$ $f={(x,y) : y=f(x)}$

Hence, the reqd. ordered pair corresponding to

$x = 2 b, is (x, y), where, y = f (2 b) = 2 b + 7$ $x=2b," is "(x,y)," where, "y=f(2b)=2b+7$ , i.e.,

$(x, y) = (2 b, 2 b + 7)$ $(x,y)=(2b, 2b+7)$ .