Answer:
The slope is -3/5.
Step-by-step explanation:
3x+5y=-5
5y=-5-3x
5y=-3x-5
y=-3/5x-5/5
y=-3/5x-1
y=mx+b where m=slope and b=y-intercept
448,261 rounded to the nearest hundred thousand is 500,000
ABC ,⊿PQR,select an angle ∠ACB =θ
LET θ’s (opp,adj,hypo)=(AB,BC,AC) and (PQ,QR,PR)
Then by similarity,
sinθ=AB/AC=PQ/PR ,cosθ=BC/AC=QR/PR ,tanθ=AB/BC=PQ/QR
the corresponding ratio of (adjacent side/hypotenuse),and hence
the cosine ratio must be the same
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