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

User Chad Levy
by
6.7k points

2 Answers

4 votes
x=8 because when you put it into the graphing calculator thats when they intersect

User Jaber
by
8.0k points
4 votes
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
User Cara
by
8.8k points
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