Use substitution to solve the system of linear equations. in your final answer, include all of your work.
y = 3x - 9
x - 1/3y = -3

he variable term is zero so, the equation has no-solution

Step-by-step explanation:

Given as :

The two linear equation are

y = 3 x - 9           .........1

x - y = - 3                     .........2

Now, , In substitution method we have to put the value of one variable from one equation into the other equation

Let put the value of y from eq 1 into eq 2

∵ x - y = - 3  

Or, x - × ( 3 x - 9 ) = - 3  

Or, x - + = - 3

Or, (x - x) + 3 = - 3

Or, 0 = - 3 + 9

Or, 0 = 3

∵ The variable term is zero so, the equation has no-solution  Answer

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.

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