The value of y varies directly with x, and y = 48 when x = 18. Find y when x = 144.

y = 384

Step-by-step explanation:

Find an equation that fits the graph

When the value varies directly, y = kx.

Find k by substituting x and y in the equation

y = kx

48 = 18k

k = 48/18

k = 8/3

To find the value of y when x = 144 by substituting x for 144

y = 8/3 x

y = 8/3 (144)

y = 1152/3

y = 384

y is 384 when x is 144.