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The graph of an absolute value equation is a V-shape.
But what does absolute value do to a number? It makes it always positive. So the graph should be positive and point upwards.
The 5 makes the slope more dramatic. Try multiplying numbers by 5 to demonstrate this: 1 x 5 = 5, 2 x 5 = 10, 4 x 5 = 20
Or rather, a negative value is made a positive value so the negative side is flipped up along the x-axis.
Therefore, the slope points will increase very dramatically and the link should become more vertical, if that makes sense.
@xKingx - The graph should make sense if you try plugging in values for x, and the finding y to find a coordinate. :D
I think I get the first part, but how would I use x to find y?
Lets plug in x=0|dw:1349487181412:dw|
When x = 1|dw:1349487247460:dw|
When x is 0, y is 0 When x is 1, y is 5 When x is -1, y is 5
Now look at the graphs.. there is only one of them that reflects this
So it's actually B?
|dw:1349487531328:dw|when x is 0.. y is 0
when x is 1|dw:1349487556857:dw|
y is 5|dw:1349487573888:dw|
When x is -1 y is 5|dw:1349487617637:dw|
Do you see how I did that?
What part do you not understand?
I'm not sure how you applied what you said to the graph.
Here is a plane
I can tell you the location of any point on it by giving you two numbers; an x-value and a y-value
the x value tells you how far left and right to move
the y-value tells you how far up and down to move
If I give you x = 3 and y=2 you want to locate the point you would start at the center of the cross |dw:1349488023608:dw| Then move 3 places to the left |dw:1349488041166:dw| and two places up |dw:1349488101424:dw|
should say 3 places to the *right
Right at the tip of this arrow is where x=3 and y = 2|dw:1349488190735:dw|
Are you following?