Question

find an equation of variation in which y varies directly as x and the following is true. yequals 21.25 when xequals 4.25

Answer 1

y = 5x

Explanation:

the equation of variation in which y varies directly as x is

y = kx ← k is the constant of variation

to find k use the given y = 21.25 when x = 4.25

21.25 = 4.25k ( divide both sides by 4.25 )

5 = k

y = 5x ← equation of variation