Tutors Answer Your Questions about Linear-equations (FREE)
Question 82152: OK, the problem is: Solve the system of equations using the substitution method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
-7x + y = 4
2x + 8y = 0
my understanding is; I should first solve the top equation because the y has a coefficient of 1 (not sure why, but that's my guess) when I do this I get:
x = -(-y+4/7) and then I am lost . . .
Click here to see answer by jim_thompson5910(35256)  |
Question 82207: The problem is: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
x + y = 4
2x – y = 2
I have no clue how to even begin these types of problems. Any help is greatly appreciated.
Click here to see answer by stanbon(75887) |
Question 82139: x -2 -1 0 1 2
y .111 .333 1 3 9
Given the table above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph, and also the domain and range of the entire function. show work
Click here to see answer by scott8148(6628)  |
Question 82223: I know how to do graphs but I do not know how to do slopes could someone help me please.
Find the slope of the graphed line
I did the graph and I tried to copy and paste it here but it would not paste. The graph points are (-5,-2) and (5,-2) with a trend line going through from the left side to the right side. I am sorry that I could not put the actual graph here it would have been easier for you to understand what I am talking about, but all of you are smarter in math than I am you should be able to figure it out without any problems. Again Thank all of you for all of your help.
Click here to see answer by jim_thompson5910(35256) |
Question 82282: Please help with this. It is the last assignment before finals, and I can't seem to get this:
GRAPH each equation to find the solution of the system:
x-y=4
2x+3y= -2
Thanks to whoever can help me with this problem.
Click here to see answer by stanbon(75887) |
Question 82804: Could you please help me with this..it is a study question and I am working hard to figure it out. Thank you very much, your tutoring is greatly appreciated!!
Find the equation of the line through (2, 4) and (5, 7). Write the equation in standard form.
Click here to see answer by stanbon(75887) |
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