Answer:
A
Step-by-step explanation:
Plug in the values of each of the coordinate pairs into the linear system.
2x - 8y = 0, -3x - 8y = 20
A)
2*-4 - 8*-1 = 0
- 8 - (-8) = 0 -> CORRECT!
-3x - 8y = 20
-3*-4 - 8*-1 = 20
12 - (-8) = 20 -> CORRECT!
You don't need to try any other pairs, you already know that this is the solution to the problem! Remember, in the future, just plug all the coordinate pairs into the equation. Whichever one makes the equation true is the correct solution! Hope this helps!
Answer:
x = 2
Step-by-step explanation:
In a vertical line, all x-coordinates are the same.
x = 2
Answer:
Step-by-step explanation:
(x + 0)/2 = 1
x + 0 = 2
x = 2
(y + 5)/2 = -4
y + 5 = -8
y = -13
(2, -13)
Answer:
24 units²
Step-by-step explanation:
Answer:
The length of one plot is 45m & the other length is 25m
Step-by-step explanation:
Let length one sq. plot = x length other sq. plot = y
area of square = length²
x² + y² = 2650 -----(1)
x² - y² = 1400 ------(2)
(1)+(2)
2x² = 4050
x² = 2025
x = 45
subx²=2025into(1)
2025 + y² = 2650
y² = 625
y = 25
