REVIEW 8th grade math

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, typically in the form a × 10^n, where 1 ≤ a < 10 and n is an integer.

Tags

CCSS.8.EE.A.3

Front

Which of the following is correct scientific notation? 20.35 x 10^4, .2035 x 10^4, 2035^4, 2.035 x 10^4

Back

2.035 x 10^4

Tags

CCSS.8.EE.A.3

Front

What is the formula for slope?

Back

Slope (m) = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on a line.

Tags

CCSS.8.EE.B.5

Front

Find the slope of the line passing through the points (1, 2) and (4, -1).

Back

Slope = (-1 - 2) / (4 - 1) = -3 / 3 = -1.

Tags

CCSS.8.EE.B.5

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate of this graph? $20 per hour, $10 per hour, 10 hours per dollar, 10 miles per hour

Back

$10 per hour

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

In the equation y=mx+b, what does m represent?

Back

m represents the slope of the line.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

In the equation y=mx+b, what does b represent?

Back

b represents the y-intercept, the point where the line crosses the y-axis.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What is the y-intercept of the line represented by the equation y = 3x + 5?

Back

The y-intercept is 5.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

Solve for x: -5x + 4 = -31

Back

x = 7.

Tags

CCSS.7.EE.B.4A