pjroldan01 pjroldan01

01-02-2018
Mathematics

contestada

The value of y varies directly with x, and y=1 when x=2.

Find y when x=4

Respuesta :

ggxrcia ggxrcia

01-02-2018

Direct variation: y=kx
k = constant of variation

Solve for k when y=1 and x=2
1 = 2 · k
k = 1/2

y = 1/2 · x

Solve for y when x=4
y = (1/2) · (4)
y = 2

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