STAAR GRADE 8 MATHEMATICS STAAR REFERENCE …

STAAR GRADE 8 MATHEMATICS REFERENCE MATERIALS

LINEAR EQUATIONS Slope-intercept form Direct variation

Slope of a line CIRCUMFERENCE Circle AREA Triangle

C = 2r

or

Rectangle or parallelogram

Trapezoid

Circle SURFACE AREA

Prism Cylinder VOLUME Prism or cylinder

Lateral S = Ph S = 2rh

Pyramid or cone

Sphere ADDITIONAL INFORMATION Pythagorean theorem

Simple interest

Compound interest

STAAR?

State of Texas Assessments of Academic Readiness

y = mx + b

y = kx

m

=

y2 - y1 x2 - x1

C = d

A = 1 bh 2

A = bh

A

=

1 2

(b

1

+

b )h

2

A = r 2

Total S = Ph + 2B S = 2rh + 2r 2

V = Bh

V

=

1 Bh 3

V = 4 r 3 3

a2 + b2 = c2 I = Prt A = P (1 + r)t

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