freemap
  • freemap
Last week, Hazel paid $32 to have 50 reports printed. This week, she paid $57 to have 100 reports printed. Assume the relationship is linear. Which equation models the relationship between the number of reports, x, and the cost, y? A. y=2x+68 B. y=1/2x +7 C. y=1/2x+24 D. y=2x +34
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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freemap
  • freemap
How do I solve this?
Vocaloid
  • Vocaloid
x = number of reports y = cost using the information in the problem, we can write two points (32,50) and (57,100) then you can write an equation for the line that goes through these points
freemap
  • freemap
ok, can you stay while I solve it

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More answers

Vocaloid
  • Vocaloid
sure
Vocaloid
  • Vocaloid
one more time: (50,32) and (100,57)
freemap
  • freemap
lol ok
freemap
  • freemap
If you use slope, its .418
Vocaloid
  • Vocaloid
you sure? (50,32) and (100,57) slope = (y2-y1)/(x2-x1)
Vocaloid
  • Vocaloid
(57-32)/(100-25) = ?
freemap
  • freemap
ok wow I did that wrong, sorry
freemap
  • freemap
-7/43= -.1627
Vocaloid
  • Vocaloid
still not right
Vocaloid
  • Vocaloid
57-32 = ?
freemap
  • freemap
25
Vocaloid
  • Vocaloid
100-50 = ?
freemap
  • freemap
oh, i thought i had to use slope
Vocaloid
  • Vocaloid
we are using slope
Vocaloid
  • Vocaloid
(57-32)/(100-50) = ?
freemap
  • freemap
25/50 =.5=1/2
Vocaloid
  • Vocaloid
good, so our slope is 1/2 know how to finish from here?
freemap
  • freemap
I have no clue how to finish
freemap
  • freemap
please help me out
freemap
  • freemap
B or C
Vocaloid
  • Vocaloid
use the point-slope equation y-y1 = m(x-x1) where (x1,y1) = one of the points (either one, take your pick) and m = slope
freemap
  • freemap
OK, just a sec
freemap
  • freemap
y-32=1/2(x-50)
freemap
  • freemap
32+-50 is 18
freemap
  • freemap
oh wait do I have to multiply 1/2 times -50
freemap
  • freemap
Please help
freemap
  • freemap
@ganeshie8
freemap
  • freemap
B or C
Vocaloid
  • Vocaloid
y-32=1/2(x-50) start by distributing the 1/2
freemap
  • freemap
I got 7 so the answer is B, forgot to distribute. Thanks so much, real hero

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