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OpenStudy (calculusxy):
MEDAL! A proportional relationship is represented by the equation 2x = 18y. If y = kx, where k is the constant of proportionality, then what is the value of k?
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OpenStudy (calculusxy):
@jim_thompson5910
OpenStudy (calculusxy):
Options are: A. 9 B. 2 C. 1/2 D. 1/9
jimthompson5910 (jim_thompson5910):
solve for y in 2x = 18y to get y = ??
OpenStudy (calculusxy):
Is it 9?
jimthompson5910 (jim_thompson5910):
how would you isolate y
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OpenStudy (calculusxy):
Do you have to factor?
jimthompson5910 (jim_thompson5910):
18y means 18 times y, agreed?
OpenStudy (calculusxy):
yes
jimthompson5910 (jim_thompson5910):
how would you undo the multiplication
OpenStudy (calculusxy):
division property of equality
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jimthompson5910 (jim_thompson5910):
so you divide both sides by _______ to isolate y
jimthompson5910 (jim_thompson5910):
fill in the blank
OpenStudy (calculusxy):
18?
jimthompson5910 (jim_thompson5910):
yep
jimthompson5910 (jim_thompson5910):
|dw:1426633253633:dw|
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