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Calculus/Algebra 1 and Calculus

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Expert: - 12/13/2007


Question
I'm having trouble starting out on my algebra questions...
Write an equation in slope-intercept form of the line with the given slope And y-intercept.

1. slope: -3, y-intercept:1
2.slope:4, y-intercept form:-2

and also graphing each equation... lets say that i had...
3. y = 2 x + y = 5
or
4. y = - 3 x + 1
or
5. 2 x + y = 5
or even...
6. 3 x - 2 y = 2

Thanks!! :) plz. reply ASAP  !!! thanks Scotto.... i appreciate it lots...  

Answer
Lines have the form y = mx + b.
The variable m denotes the slope and b is for the y intercept.

3. y = 2 x + y = 5 - this does not look like an equation - it has the solution x=0, y=5.

4. Here, the slope is m=-3, y intercept is 1, so the line drops 3 units for every 1 it goes to the right (that's what slope is) by and it crosses the y-axis at 1.

5. The proper form of this equation is y = -2x + 5,
so m=-2, b=5 (negative slope, positive intercept).

6. y = (3x-2)/2, or 1.5x - 4, so you see what m and b are?  Can you see the graph now?

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Scotto

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Any kind of calculus question you want. I also have answered some questions in Physics (mass, momentum, falling bodies), Chemistry (charge, reactions, symbols, molecules), and Biology.

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Experience in the area: I have tutored students in all areas of mathematics for over 25 years. Education/Credentials: BSand MS in Mathematics from Oregon State University, where I completed sophomore course in Physics and Chemistry. I received both degrees with high honors. Awards and Honors: I have passed Actuarial tests 100, 110, and 135.

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Maybe not a publication, but I have respond to well oveer 7,500 questions on the PC. Well over 2,000 of them have been in calculus.

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I have been nominated as the expert of the month several times. All of my scores right now are at least a 9.8 average (out of 10).

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