Question

Find an equation of variation in which y varies directly as x and y=1 when x=0.5. Then find the value of y when x = 14.

An equation of variation is y= ___.

When x=14, the value of y is ___.

Answer 1

Part 1

The value of y is twice that of x, so the equation is y = 2x.

Part 2

Substituting in x = 14, we get y = 2(14) = 28.