shelbystierwaloriqlb shelbystierwaloriqlb
  • 14-06-2017
  • Mathematics
contestada

what is the y-intercept of the equation y=2(4^x) A. 8 B. 4 C. 2 D. 6

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iamredgrapes
iamredgrapes iamredgrapes
  • 20-06-2017
the y-intercept of a graph is the point on the graph where x=0, so you would substitute 0 for x in the equation and work out the equation from there
y=2(4^0)
anything to the power of 0 equals one so it can be rewritten as the following
y=2(1)
according to the identity property of multiplication, anything times 1 is itself therefore...
y=2
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