0
-7
Doris Carter
Wiki User
∙ 12y agobecause 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
Add your answer:
Earn +20 pts
How do you evaluate 2xy times 9 if x equals 3 and y equals 2?
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.
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
What is the square root of 18xy in radical form?
√18xy = √(9*2xy) = √9*√2xy = 3*√(2xy)
Does 6xy-8xy equals -2x squared y squared?
No, it equals -2xy. lrn2math
How do you evaluate 2xy times 9 if x equals 3 and y equals 2?
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.
Evaluate 2xy when x equals 30 and y equals 2?
2xy=2*30*2=120
2xy x equals 5 y equals 3?
2xy substitute 3 for y and 5 for x 2(5)(3) = 30
Simplify 15xy-2xy-7x plus x equals?
15xy-2xy-7x+x=13xy-6x
What is the square root of 18xy in radical form?
√18xy = √(9*2xy) = √9*√2xy = 3*√(2xy)
Does 6xy-8xy equals -2x squared y squared?
No, it equals -2xy. lrn2math
What 2xy-3y plus 1 equals 0?
It's an hyperbola equation.
Why cant 2x plus y equals 2xy?
Because 2x+y is addition not multiplication
2cy plus 2xy equals 15 solve for y?
Y=15/(2c+2x)
When x-y equals 7 and xy equals 8 find the value of x square plus y square?
x2 + y2 = x2 - 2xy + y2 + 2xy = (x - y)2 + 2xy = 72 + 2*8 = 49 + 16 = 65 You could, instead, solve the two equations for x and y and substitute, but the above method is simpler.
What is the greatest common factor of 4xy and -6xy?
2xy
What is 2xy times x?
(2xy)x=2x2y
