Answer:
x=5, y=8. (5, 8).
Step-by-step explanation:
3x+5y=55
5x+4y=57
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5(3x+5y)=5(55)
-3(5x+4y)=-3(57)
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15x+25y=275
-15x-12y=-171
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13y=104
y=104/13
y=8
3x+5(8)=55
3x+40=55
3x=55-40
3x=15
x=15/3
x=5
Answer:
y=-1/2x+3/2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-1-1)/(5-1)
m=-2/4
m=-1/2
y-y1=m(x-x1)
y-1=-1/2(x-1)
y=-1/2x+1/2+1
y=-1/2x+1/2+2/2
y=-1/2x+3/2
That would just be
66/24, as there is 24 minutes in a half
66/24=2.75 points
p = 2.75 points per min
Yes.
They both will end with the equation
.. y = -2x +9