Answer:
Step-by-step explanation:
Given
The given equation is 
There are two functions i.e. 
Their intersection gives the solution of the above function
From the graph, we can see that both the graph intersects at two different points i.e. at

A drawing that shows a real object with accurate sizes reduced or enlarged by a certain amount (called the scale). The scale is shown as the length in the drawing, then a colon (":"), then the matching length on the real thing.
You can cross multiply and the answer would be 100/9
9/10=10/k
100=9k
k=100/9
Ok why’s the picture upside down??.?