Algebra I Graduation Examination Reference Sheet
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1End-of-Course Assessment
ISTEP+: Algebra I Graduation Examination
Reference Sheet
Equation of a Line
Slope-Intercept Form:
Point-Slope Form:
Standard Form of a Linear Equation:
=
+
+
=
−
=
−
y
mx
b
Ax
By
C
y
y
m x
(
x
)
1
1
m =
m =
where
slope
and
where A and B are not both zero
where
slope
and
=
b
y
-intercept
(
x
,
y ) is a point on the line
1
1
Slope of a Line
Let
(
x
,
y
) and (
x
,
y
)
be two points in the plane.
1
1
2
2
−
y
y
change in
y
=
=
2
1
slope
−
change in
x
x
x
2
1
≠
where
x
x
2
1
Standard Form of a Quadratic Function
2
=
+
+
f x
( )
ax
bx
c
≠
where
a
0
b
= −
axis of symmetry :
x
2
a
Quadratic Formula
2
±
−
−
b
b
4
ac
=
x
2
a
2
+
+ =
a ≠ 0
where
ax
bx
c
0 and
Pythagorean Theorem
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