It is not possible, as there are just 2 sides, and they likely flipped it in various ways. They experienced some 'luck'.
As you may realize, the equation y=-7/4x-2 is already formatted in slope-intercept form, which means that its slope is represented by the "x" coefficient, that is, -7/4.
Lines that are parallel share identical slopes, therefore a line parallel to this would also maintain a slope of -7/4, which would go through the point (4,2),

Answer: Macy's pre-tax shirt price is $5.63
Step-by-step explanation:
Details:
Original cost = 20
sale price drops by 25% every month it remains unsold.
First markdown month:
20 * (100%-25%) = 20 * 75% = 15
Second markdown month:
15 * 75% = 11.25
Macy, being an employee, enjoys a 50% discount on the current price.
11.25 * 50% = 5.625
11.25 - 5.625 = 5.625 or rounded to 5.63
Hope this helps!:)