Question

3x + 9y = 0
x - 9y = 30





A. (-15, -5)
B. (5, 11)
C. (-14, 5)
D. (-1, -15)
E. None of the above

Answer 1

I what to say a

Answer 2

Simplifying
3x + 9y = -30

Solving
3x + 9y = -30

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-9y' to each side of the equation.
3x + 9y + -9y = -30 + -9y

Combine like terms: 9y + -9y = 0
3x + 0 = -30 + -9y
3x = -30 + -9y

Divide each side by '3'.
x = -10 + -3y

Simplifying
x = -10 + -3y

Answer 3

okay to do this first that the 1st eq'n
2x -6y = 30 and graph it.
I would graph this line by finding the x and y intercepts
x int (let y = 0): (15,0)
y int (lets x = 0): (0,-5)

next, take the second equation 3x-9y=-27 and graph it as well

x int (let y = 0): (-9,0)
y int (lets x = 0): (0,3)

wherever the lines meet is the sol'n

Answer 4

So its A

Answer 5

The solution will be one point on the graph (x,y) where the two lines intercept. The lines should only cross once.

The (15,0) and (0,-5) are just two points so you can graph the first line.

Answer 6

yes

Answer 7

when these two equations are graphed, they are parallel; which means no solution.

Answer 8

try adding the equations together
3x+9y=0
x- 9y=30
-------

Answer 9

u get it @$Young_Money$

Answer 10

adding the two equations together simply eliminates the y part
and you can solve for x

Answer 11

Yea

Answer 12

glad

Answer 13

if u still need help tag me ight and have a nice day ^_^