<h3>
<u>Explanation</u></h3>
- Given the system of equations.

- Substitute y = -4x in the second equation.

- Substitute the value of x in any given equations. I will substitute the value of x in the first equation.

- Answer Check by substituting both values in two equations.
<u>First</u><u> </u><u>Equation</u>

<u>Second</u><u> </u><u>Equation</u>

Both equations are true for the value of x and value of y.
<h3>
<u>Answer</u></h3>
<u>
</u>
<u>Coordinate</u><u> </u><u>Point</u><u> </u><u>form</u>
<u>
</u>
Answer:
8/21
Step-by-step explanation:
-1/3 + 5/7=1×7 =-7/21 +15/21
- × -
3. 7
-7/21 + 15/21= -7+15 = 8/21
-----
21
Answer:
D
Step-by-step explanation:
I am confused but thats my guess
Answer:
x >25
Step-by-step explanation: