2007-04-27 16:01:54 · 5 answers · asked by sonne_engel 1 in Science & Mathematics ➔ Mathematics
As |x| = 8 means 8 is the vertex on the number line of the graph |x|, when graphically speaking, 2|x| = 8 ought to mean when graph |x| is of gradient = 2, (y = mx + c), the vertex is at 8.
2007-04-27 16:32:13 · answer #1 · answered by Liu Yi 1 · 0⤊ 1⤋
I'm not quite sure what you mean by definision on the number line..... Do you mean "notation" on the number line?
x can be 4 or -4. So, there will be a black dot right on 4 and -4 on the number line.
2007-04-27 16:05:37 · answer #2 · answered by tkquestion 7 · 0⤊ 0⤋
What do you mean by the number line?
Are you talking about the absolute value? Numbers in the absolute value can be either +ve or -ve. But when they come out of the absolute value they would only be +ve.
2007-04-27 16:10:43 · answer #3 · answered by Samantha 6 · 0⤊ 0⤋
4?
2007-04-27 16:05:30 · answer #4 · answered by Michael T 1 · 0⤊ 0⤋
2|x|=8
2x=8 or -2x=8
x=+4 or -4
2007-04-27 17:01:16 · answer #5 · answered by Matthew T 2 · 0⤊ 0⤋