Which ordered pair is the best estimate for the solution of the system of equations? y=−2.5x+6.5
1 answer:
Answer:
(11/7 , 18/7)
Explanation:
The second given equation is:
y = x + 1 ............> I
The first given equation is:
y = -2.5 x + 6.5 ..............> II
Substitute with I in II and solve for x as follows:
y = -2.5 x + 6.5
x + 1 = -2.5 x + 6.5
x + 2.5 x = 6.5 - 1
3.5 x = 5.5
x = 11/7
Now, substitute with x in equation I to get y as follows:
y = x + 1
y = 11/7 + 1
y = 18/7
Hope this helps :)
You might be interested in
The temperature on Thursday morning would be -13°F.
Since the temperature decreased throughout the night, this is a subtraction problem.
-5 - 8 = - 13
Answer:
Step-by-step explanation:
= 
2x = 15
x = 7.5
No, it is a linear function.
Answer:
x=45
Step-by-step explanation:
You should follow the formula:
3x+3x+x+x=360
8x=360
x=45
The correct expressions are
-8.8
11(-2)
-6.7