During a sale, a dress is marked down from a selling price of $80 to a sale price of $60. What is the percent markdown
1 answer:
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Answer:
slope = -
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - x + 3 ← is in slope- intercept form
with slope m = -