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 p = -0.004n + 8

Step-by-step explanation:

Consider the number of shirts & the price as an x,y - coordinate

4000 shirts at $32  -->  (4000, 32)

5000 shirts at $28  --> (5000, 28)

Use the slope formula:

Next, use the Point-Slope formula (replace x with n & replace y with p):

none.

step-by-step explanation:

m

1

=

5

m1=5

b

=

−

1

b=-1

find the slope and y-intercept of the second equation.

tap for more

m

2

=

0

m2=0

b

=

−

6

b=-6

compare the slopes

m

m of the two equations.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

compare the two slopes in the decimal form. if the slopes are equal, then the lines are parallel. if the slopes are not equal, then the lines are not parallel.

m

1

=

5

,

m

2

=

0

m1=5,m2=0