Answer:
Step-by-step explanation:
Putting values in the equation
-(-3)-(2)3+ (-2) (3)
3 - 8 + (- 6)
-5 - 6
= - 11
No you don't know if the hypotenuse or the other leg are congruent
Answer:
x=13
y=132
Step-by-step explanation:
............

In order to find the solution by graphing we need to make two equation with x and y terms
we use Left hand side 4x^2 for first equation and right side x^2 -7 for second equation.
So the equation becomes
first equation 
Second equation 
are the system of equations that can be graphed to find solution