Answer:
(4,2)
Step-by-step explanation:
(4)-4(2)=-4
5(4)-4(2)=12
Divide by the coefficient of x.
x = 27/47
Interquartile range (xU-xL<span>): 10.75</span>
Answer for #1
Let the old price be
$
x
per liter. 10 liters would have cost a total of
$
10
x
.
The new price is
$
(
x
+
0.20
)
per liter. 10 liters would have cost
$
10
(
x
+
0.20
)
.
The total cost is
$
9.20
. So,
10
x
+
10
(
x
+
0.20
)
=
9.20
10
x
+
10
x
=
9.20
−
2
x
=
7.20
20
x
=
0.36
Thus, the old price was
$
0.36
per liter.
(x,y)
(-1,4)
y=4
the equation is y=4 because the slope is actually undefined
y=2 is paralell to y=4
euation is y=4