Posted by Cupcake on Saturday, November 17, 2007 at 9:41pm.
These are the points on the graph!
O year = $41000
1 year = $43000
2 year = $46000
3 year = $48500
The following graph shows Bob’s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents the year 2002.
List the coordinates of any two points on the graph in (x, y) form.
(___, ___),(___, ___)
b) Find the slope of this line:
Answer:
Show your work here:
c) Find the equation of this line in slopeintercept form.
Answer:
Show or explain your work here:
d) If Bob’s salary trend continued, what would his salary be in the year 2008?
Answer:
Show or explain your work here:

College Algebra  Cupcake, Saturday, November 17, 2007 at 9:42pm
Find the equation of this line in slopeintercept form.
Answer:
Show or explain your work here:
d) If Bob’s salary trend continued, what would his salary be in the year 2008?
Answer:
Show or explain your work here:

College Algebra  Michael, Saturday, November 17, 2007 at 9:55pm
Sorry I didn't see the followup on your other question.
Slopeintercept form is y = mx + b, where m is slope and b is the yintercept.
You can easily calculate the slope. It's change in y over change in x. (48500  41000)/(3  0) = 7500/3 = 2500.
The yintercept occurs at x=0, so from what you've provided, it is 41,000.
Therefore, we have...
y = 2500x + 41,000

College Algebra  Cupcake, Saturday, November 17, 2007 at 9:57pm
I'm lost

College Algebra  Cupcake, Saturday, November 17, 2007 at 10:18pm
No, I don't understand any of it.

College Algebra  Michael, Saturday, November 17, 2007 at 10:43pm
The definition for slopeintercept form is y = mx + b. The m is slope, and b is the yintercept. It's a definition; you just have to memorize it.
For two points (x1, y1) and (x2, y2), the slope is (y2  y1)/(x2  x1).
For (4, 2) and (3, 1), the slope is (2   1)/(4  3) = (2 + 1) / (4  3) = 3 / 1 = 3.
The yintercept is where the line crosses the graph on the yaxis. The yaxis crosses the xaxis at x=0, so the yintercept is always at x=0.
If you have any questions, let me know.
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