Question

The variable, y, varies directly with x. If y = 26 when x = 21, what is y when x = 64?

Answer 1

Answer:

y=69

Step-by-step explanation:

first step:when y=26 and x=21

c=y-x

c=26-21

c=5

second step: when y is unknown and x=64

To find y we simply add the value of c to x

y=x+c

y=64+5

y=69