Answer:
1. x + y = 25
2. x - y = 7
3. x = 16, y = 9
Step-by-step explanation:
(x + y = 25) + (x - y = 7)
2x (the y cancels) = 32
32/2 = 16, x = 16
substitute x in either equation
16 + y = 25
y = 9
Answer:
8.97998
Step-by-step explanation:
A good place to start is getting your first equation into the standard y=mx+b form.
It would be y=-4x+1 and y=4x-1
Then we can set them equal to each other, solve for x, and see what happens.
-4x+1=4x-1
1=8x-1
2=8x
X=1/4
Now to solve for the y value you plug .25 in for x in either equation. You’ll get zero. Therefore your lines will intersect at (.25,0)
Hope this helped!
Answer:
No, 4x - 12 ≠ 4x + 6
Step-by-step explanation:
<u>Step 1: Distribute both expressions</u>
4(x - 3)
(4 * x) + (4 * -3)
(4x) + (-12)
4x - 12
6x - 2(x - 3)
6x - (2 * x) - (2 * -3)
6x - (2x) - (-6)
6x - 2x + 6
4x + 6
Answer: No, 4x - 12 ≠ 4x + 6
