if the value of y varies directly with x and y=4 when x=-10 find y when x =35

Answer 1

Step 1:

 varies directly with , then .

Find the value of .

When , the value of  is .

Substitute  and  in .

.

Step 2:

Find the value of  when .

Substitute  and  in .

.

The value of  when  is .

Solution:

.