One Solution at point (3, -2)
X/y
x=1 when y= 5
x=2 when y =10
the constant of proportionality = 1/5
Here, (7 * 9) = (7 * 10) - (7 * x)
Here, Take 7 as a common factor according to distributive property:
= 7(10 - x)
Now, 10-x = 9
x = 10-9 = 1
In short, Your Answer would be 1
Hope this helps!
