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Let’s check out your problem:
Complete the equation of the line through
(
−
8
,
8
)
(-8,8)
(
−
8
,
8
)
and
(
1
,
−
10
)
(1,-10)
(
1
,
−
10
)
. Use exact numbers.
\newline
y
=
□
+
x
‾
‾
‾
y=\square \underline{+\underline{\underline{x}}}
y
=
□
+
x
View step-by-step help
Home
Math Problems
Grade 8
Write a linear equation from two points
Full solution
Q.
Complete the equation of the line through
(
−
8
,
8
)
(-8,8)
(
−
8
,
8
)
and
(
1
,
−
10
)
(1,-10)
(
1
,
−
10
)
. Use exact numbers.
\newline
y
=
□
+
x
‾
‾
‾
y=\square \underline{+\underline{\underline{x}}}
y
=
□
+
x
Find Slope:
Find the
slope
(m) using the formula
m
=
y
2
−
y
1
x
2
−
x
1
m = \frac{y_2 - y_1}{x_2 - x_1}
m
=
x
2
−
x
1
y
2
−
y
1
.
\newline
Calculation:
m
=
−
10
−
8
1
−
(
−
8
)
=
−
18
9
=
−
2
m = \frac{-10 - 8}{1 - (-8)} = \frac{-18}{9} = -2
m
=
1
−
(
−
8
)
−
10
−
8
=
9
−
18
=
−
2
.
Point-Slope Form:
Use the
point-slope form
y
−
y
1
=
m
(
x
−
x
1
)
y - y_1 = m(x - x_1)
y
−
y
1
=
m
(
x
−
x
1
)
with point (
−
8
-8
−
8
,
8
8
8
).
\newline
Calculation:
y
−
8
=
−
2
(
x
+
8
)
y - 8 = -2(x + 8)
y
−
8
=
−
2
(
x
+
8
)
.
Simplify Equation:
Simplify the equation to get it in
slope-intercept form
y
=
m
x
+
b
y = mx + b
y
=
m
x
+
b
.
\newline
Calculation:
y
−
8
=
−
2
x
−
16
y - 8 = -2x - 16
y
−
8
=
−
2
x
−
16
.
Isolate y:
Add
8
8
8
to both sides to isolate y.
\newline
Calculation:
y
=
−
2
x
−
16
+
8
y = -2x - 16 + 8
y
=
−
2
x
−
16
+
8
.
Simplify Right Side:
Simplify the right side.
\newline
Calculation:
y
=
−
2
x
−
8
y = -2x - 8
y
=
−
2
x
−
8
.
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\newline
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−
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60
+
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+
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1
=
\newline
Enter the answer as an exact decimal or simplified fraction.
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Question
0.25
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Enter the answer as an exact decimal or simplified fraction.
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Question
Let
x
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2
=
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\newline
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d
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d
2
y
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(
2
,
4
)
(2,4)
(
2
,
4
)
?
\newline
Give an exact number.
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\newline
d
y
d
x
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y
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d
x
d
y
=
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\newline
Choose
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\newline
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\newline
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g
(
x
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−
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)
(
x
−
3
)
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g
(
x
)
=
2
(
x
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)
(
x
−
3
)
and
h
(
x
)
=
2
(
x
+
5
)
(
x
+
3
)
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h
(
x
)
=
2
(
x
+
5
)
(
x
+
3
)
are graphed in the
x
y
x y
x
y
-plane. Which of the following is a true statement?
\newline
Choose
1
1
1
answer:
\newline
(A) The functions have the same
y
y
y
-intercept.
\newline
(B) The functions have the same
x
x
x
-intercepts.
\newline
(C) The functions have the same axis of symmetry.
\newline
(D) The functions have the same vertex.
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Posted 9 months ago
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