Answer:
x = 1, y = 3
Step-by-step explanation:
y = -2x + 6 --- Equation 1
y = 4x - 1 --- Equation 2
Since both (-2x + 6) and (4x - 1) have the same total, y, they are equal.
-2x + 6 = 4x - 1
Isolate the like terms.
6 + 1 = 4x + 2x
Evaluate like terms.
6x = 7
Find x.
x =
x = 1
Substitute x = into Equation 2:
y = 4x - 1
y = 4() - 1
= 4 - 1
y = 3
Answer:
Option B. Quadratic
Step-by-step explanation:
In a regression model, the value of tells us how accurately the model fits the data.
That closer the value of of 1 is, better is the model.
This can be used to compare what type of model is most convenient to use in some cases.
In this problem the attached table shows a comparison of the value of for 3 models
Linear
Quadratic
Exponential
Note that the value of that is closest to 1 is that which corresponds to the quadratic model.
Therefore the function that best fits the points is the quadratic
Use the formula
a
n
=
a
n
2
+
b
n
+
c
a
n
=
a
n
2
+
b
n
+
c
to identify the quadratic sequence.
a
n
=
n
2
+
6
n
+
9
a
n
=
n
2
+
6
n
+
9
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Answer:
66 = s
Step-by-step explanation:
s + 24 = 90
90 = s + 24
90 - 24 = s
66 = s
So if you are solving for x we have to do this
4x+6=2x+10
4x-2x=10-6
2x=4
x=4/2
x=2