Answer: x^2−xy+1
Step-by-step explanation:
simplify:
5+x^2−xy−4
5+x^2+−xy+−4
Combine Like Terms:
5+x^2+−xy+−4
(x^2)+(−xy)+(5+−4)
x^2+−xy+1
The given equation is: 
To find the line perpendicular to it, we interchange coefficients and switch the signs of one coefficient.
The equation to a line perpendicular to it is:
$ 2y-x=c$
where, $c$ is some constant we have determine using the condition given.
It passes through $(2,-1)$
Put the point in our equation:
$2(-1)-(2)=c$
$c=-2-2$
$c=-4$
The final equation is:
$\boxed{ 2y-x=-4}$
Answer:
line a and line c are parallel
Step-by-step explanation:
y-4x=6
+4x +4x
y=6+ 4x
-----
y-4x=4
+4x +4x
y=4+4x
Your'e actually right!
Your Answer is C!
I HOPE this helped!
Have a great day!
Answer:
The equations could be used to find one of the numbers is, 
Step-by-step explanation
Let two integers be a and b.
As per the given statement:
The product of two integers is 112.
⇒
......[1]
Also, One number is 4 more than three times the other.
⇒b = 3a +4 ......[2]
Now substitute equation [1] in [2] we get

Using distributive property i.e, 

Simplify:

therefore, the equation that could be used to find one of the numbers is;
