Mary has an equal number of dimes and quarters. If she has $2.10 in all, how many coins of each does she have?
1 answer:
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Answer:
slope = -
Step-by-step explanation:
Calculate the slope m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 3, 4) and (x₂, y₂ ) = (4, - 1)
m = = -