Just type it into the graphing calculator, but reorder and solve for y first.
x + y = 9
y = 9 - x
y = x^2
In the graphing calculator,
Y1 = 9 - x,
Y2 = x^2
If you don't have a graphing calculator try desmos.

Length of the room is 5 m and width is 5 + 2 = 7 m.
Hope this helps.
r3t40
Hello there,
The equation that is give to us is as follows:
- -1 = 5 +
In order to solve for x we would first subtract 5 from both sides and then multiply by 6:
This means that x would equal to -1 given the equation above.
Hope I helped,
Amna
Answer:
C. 90√3
Step-by-step explanation:
5√2 . 9√6 = 45√12 = 45×2√3
= 90√3
increase in x results in the decrease in y