SOLUTION: I don't know what the steps are to find an answer. I am 50 years old and have never taken algebra, so it dosen't make a lot of sence to me, but here is the problem: solve the syste

Question 173016: I don't know what the steps are to find an answer. I am 50 years old and have never taken algebra, so it dosen't make a lot of sence to me, but here is the problem: solve the system of equations by graphing
y= -1/4x-4, 5x-4y=40
also 8x-9y=-54, 8x=9y-54
I am studying on line using Developmental Mathematics - Basic Mathematics and Algebra
by Lial, Hornsby, McGinnis, Salzman and Hestwood
� 2008 Pearson - Addison Wesley as the text book
I have tried to make a table, but it dosent work. I just don't understand the steps or know what steps to use to answer these questions. please help, thank you rebecca Leon
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
y= -1/4x-4 or y=-x/4-4 (red line)
5x-4y=40 or -4y=-5x+40 or y=-5x/-4+40/-4 or y=5x/4-10 (green line)
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions -x/4 -4 and 5x/4 -10).
ANSWER (4,-5)
8x-9y=-54 or -9Y=-8X-54 or y=-8x/-9-54/-9 or y=8x/9+6 (red line)
8x=9y-54 or 9y=8x+54 or y=8x/9+54/9 or y=8x/9+6 (green line)
(graph 300x200 pixels, x from -8 to 5, y from -10 to 10, of TWO functions 8x/9 +6 and 8x/9 +6).
NO UNIQUE SOLUTION HERE BECAUSE THESE ARE 2 IDENTICAL EQUATIONS WITH 2 UNKNOWNS.
RELATED QUESTIONS
I am really having a hard time with finding intercepts to a problem so I can graph it. I (answered by ankor@dixie-net.com)

Need help with the basics of logarithm. 5log 7a + 20b I don't know how to format... (answered by ikleyn)

Jasmine is 23 years old. Jamie is 3 years less than half of George�s age.Write and solve... (answered by ankor@dixie-net.com)

okay, i am doing proofs in class and i have had three tests and failed them all. Not to... (answered by Mathtut)

Simplify -2√180u³v^6 I know what the answer is but I don't understand the u³ and... (answered by Theo,greenestamps)

I have taken the accuplacer test 3 times, needing to obtain a score of 85. I never know... (answered by ReadingBoosters)

I'm trying to help my niece with an algebra problem that has both of us stumped...... (answered by shree840,mananth,Alan3354)

I do not know how am I supposed to answer questions with unknown variables, like maybe... (answered by josgarithmetic,ikleyn)

I asked a friend of mine who is proficient in math to help me with this well needless to... (answered by richwmiller,dabanfield)