-3
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5x - y = 8
We need to put it in a function of y, therefore:
Subtract -5x:
-y = -5x + 8
Multiply by -1:
y = 5x - 8
Slope: 5
y-intercept: (0, -8)
x-intercept: (1.6, 0)
9
No.No.No.No.
It is: 7a/5xy
5xy+4=9 is the problem, right? 5xy+4=9. Now subtract the 4 from both sides. 5xy=5. Ok, then, that looks less scary. Now, divide both sides by 5, to get xy=1. Hmm, a lot simpler. Now, divide both sides by x to get y by itself. So, y=1/x. Alright. That's your line! No, its not a straight line. There is a vertical asymptote where x=0, and the two segments aren't straight. But that's a simpler form of the equation. Hope that helped!
No it is not, however, 6x² - 5xy is.