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# Which graph represents f(x)= 4*5 x ?

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Which graph represents f(x)= 4*5x?

jbouyer  Nov 29, 2017

#1
+5589
+2

y  =  f(x)  =  4 * 5x

5  >  1 , so  y  will get bigger as  x  gets bigger.  That rules out the fourth graph.

And...

f(0)  =  4 * 50  =  4 * 1  =  4       So the graph passes through the point  (0, 4) .

That rules out the first and third graph.

The second one has to be the right graph.

hectictar  Nov 29, 2017
Sort:

#1
+5589
+2

y  =  f(x)  =  4 * 5x

5  >  1 , so  y  will get bigger as  x  gets bigger.  That rules out the fourth graph.

And...

f(0)  =  4 * 50  =  4 * 1  =  4       So the graph passes through the point  (0, 4) .

That rules out the first and third graph.

The second one has to be the right graph.

hectictar  Nov 29, 2017

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