Havin a problem with this slope equation. Can you help?(9,-5); 3x-5y=6

Question

(9,-5); 3x-5y=6

Answer 1

Read the instructions for this problem carefully, and make sure you have included them in this post.

As you've written it here so far, I can't figure what the problem is asking you to do.

I certainy could guess, but that wouldn't be too instructive, and I would really like to help.

Answer 2

What this question is trying to get you to understand is that any two ordered pairs that lie on a line are needed to calculate the slope of the function or line itself. So, the formula for calculating the slope of any line is

 

 

the second "y-value" minus the first "y-value" divided by the second 'x-value" minus first "x-value". 

 

 

Now you have already been given one ordered pair that lies on the line but you need two for this equation. So plug in any x value and solve for y to get the y value. These two answers, the x you plugged in and the result, y, will be the second ordered pair, (x,y). Now take the two ordered pairs (9,-5) and your (x,y) and use the formula above. The cool thing about this equation is you can choose which ordered pair to use first and second it doesn't matter. Now understanding this, we take the equation and come up with the slope,

 

(y-(-5))/(x-9)

 

Plug in the x and y values you came up with in the equation, and remember they can be ANY values that make the equation true, and you should have your slope for this particular line. Hope I could help!

 

Answer 3

Joeann,  I believe that you are being asked if (9,-5) is a solution to the equation 3X - 5Y = 6.  Is this correct?  If so, then the problem is asking you if the point (9,-5) lies on the line itself.  If it does, then the point is said to be one of the SOLUTION to the equation.  The solution is the set of all points that make up the line 3X - 5Y = 6.  Now, it would take your lifetime, mine, and many others to find those answers!  We only need to find a "representation" of all of those points.  That's why some of your answers only show 3-4 points...it presents a fair representation of all of the points.  Go ahead and substitute 9 in for X and -5 in for Y. If the simplifications show a true equality, then the point is a solution.  So, Joeann, did the values work?  My efforts show  "no".  Good luck with the rest of the assignment.

 

Charles S. of Arden, NC