Y=2x or y=x+2 If you plug in the ordered pairs for both, they fit.
Answer:
No real solutions!!! That is the answer.
Step-by-step explanation:
2500 * 0.9 = 2250
2250 * 0.9 = 2025 current stock
y = -2x - 9 ----------- 1
y = 3x + 1 -------------- 2
Step 1
Substitute y from equation 1 to equation 2.
y = -2x - 9
3x + 1 = -2x - 9
Step 2
Collect like terms
3x + 2x = - 9 - 1
5x = -10
Step 3
Divide through by 5
x = -10/5
x = -2
Step 4
Substitute x in equation 2 to find y.
y = 3x + 1
y = 3(-2) + 1
y = -6 + 1
y = -5
So the solution is (-2, -5)
