Posted by Cupcake on Saturday, November 17, 2007 at 9:41pm.
Find the equation of this line in slope-intercept 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:
Sorry I didn't see the follow-up on your other question.
Slope-intercept form is y = mx + b, where m is slope and b is the y-intercept.
You can easily calculate the slope. It's change in y over change in x. (48500 - 41000)/(3 - 0) = 7500/3 = 2500.
The y-intercept occurs at x=0, so from what you've provided, it is 41,000.
Therefore, we have...
y = 2500x + 41,000
I'm lost
What part are you having trouble with?
Do you understand the equation for slope-intercept form?
Do you understand how to calculate slope?
Do you understand how to find the y-intercept?
No, I don't understand any of it.
The definition for slope-intercept form is y = mx + b. The m is slope, and b is the y-intercept. 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 y-intercept is where the line crosses the graph on the y-axis. The y-axis crosses the x-axis at x=0, so the y-intercept is always at x=0.
If you have any questions, let me know.
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