Write the equation of this line. a line that contains point (2, –2) and perpendicular to another line whose slope is –1.

Step-by-step explanation:

Step One

Find the perpendicular to the line with a given slope of - 1

m1 * m2 = - 1            Let the given line have a slope of - 1. Call it m1

-1 * m2 = - 1              Divide both sides by -1

-1/-1 * m2 = -1/-1

m2 = 1

Step Two

Write what you have so far

y = 1 * x + b

y = x + b

Step Two

Solve the general equation for (2,-2)

y = x + b

x = 2

y = -2

-2 = 2 + b      Subtract 2 from both sides

-2 - 2 = b       switch and add

b= - 4

Answer

y = x -4

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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step-by-step explanation: