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Mathematics 14 Online
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?

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

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

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):

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