Solving system by elimination

x=6andy= -6

Step-by-step explanation:

for this one is more easy in how are your equations.

-4x-2y= -12

4x+8y= - 24

as you can see the x's in both equations are the same number and opposite sign (+,-)

solving by elimination do you need to start with equations with one of the variables in both equations with the same number and different sign.

after you have your equation you combine both and you can eliminate x

-4x-2y= - 12 after you combine you are going

4x+8y= - 24 en with 6y=-36

6y= -36 the next step is divide 6 in both

6 6 sides

y= - 6⬅️and you ends whit this

after you solve for one of the letters you need to find the other ones. in this case we need to find x

so to find x you only needs to use one of the original equations and solve for x

-4x-2y= -12 original equation

-4x-2(-6)= -12 switch the y -6

-4x+12= -12 multiply the -6×2

-12. -12 substract 12 in both sides

-4x= -24 divide -4 also in both sides

-4 -4

x=6final answer.

here is also how do you do you solve for x using the other equation; and you can see that we get the same answer, but you don't need to copy both of the equations when you are solving for the other letters jus I write also how do you do with this one in case that can be necessary or if this helps you. Also are the same steps as the other one.

4x+8y= - 24

4x+8(-6)= -24

4x-48= - 24

+48 +48

4x=24

4 4

x=6

I hope and this helps and I'm really sorry for make this longer.

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

read more on -

the first one

step-by-step explanation:

just id the test.