Y and x have a proportional relationship and y =5 when x = 4 what is the value of x when y =8

asked Dec 1, 2019 43.5k views

1 vote

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3 votes

y = kx
k = y / x = 5/4 = 1.25
so
y =8 then
8 = 1.25 x
x = 8/ 1.25 = 6.4

answer
x = 6.4 when y = 8

Aneurinc answered Dec 4, 2019

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6 votes

y/x = 5/48/x = 5/45x = 32x = 6.4

Sorry if this doesnt help

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