Question

If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?48O y - 3 (2)O y = 4g (2)(48)(B)O y--(48)(6)

Answer 1

The phrase y varies directly as x can be understood that y gets bigger when x gets bigger as well, this can be written as,

`(y_1)/(x_1)=(y_2)/(x_2)`

then, using the point (6,48) find the value when x is 2,

`(48)/(6)=(y_2)/(2)`

clear for y2,

`y_2=(48)/(6)(2)`

Answer:

`y_=(48)/(6)(2)`