-7
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because this equation has 2 variables, each variable won't have an exact answer.
this equation will make a nice line graph though, this is how to put it in that format.
2x-y=9
add y to both sides
2x=9+y
subtract 9 from both sides
y=2x-9
now you can graph it. it has a slope of 2 and a y intersect of -9
2xy*9 if x=3 and y = 2 2(3)(2)*9 12*9 108 You substitute x and y for their equivalent (3 and 2) then simply multiply 2*x*y, then multiply the answer of that by 9.
2xy=2*30*2=120
15xy-2xy-7x+x=13xy-6x
√18xy = √(9*2xy) = √9*√2xy = 3*√(2xy)
No, it equals -2xy. lrn2math