<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:
perpendicular
Step-by-step explanation:
When 2 lines intersect at any point, not just in the middle of each (that has nothing to do with it), and they meet to form right angles, the lines are perpendicular to one another and their slopes are opposite reciprocals.
They used 20, 1 quart containers of milk.
250 calls in 10 hours = 375 in 15 hours