maridis maridis
  • 19-03-2017
  • Mathematics
contestada

The graph of the line with equation y = 7 x + 8 crosses the x-axis when x = ?

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kikikikiki kikikikiki
  • 19-03-2017
x=8 because when you put it into the graphing calculator thats when they intersect

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bcalle
bcalle bcalle
  • 19-03-2017
To find the X intercept plug in a zero for the Y then solve for X.
y = 7x + 8
0 = 7x +8
Subtract 8 from both sides
-8 = 7x
Divide both sides by 7
-8/7 =x
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