Always Sometimes Never

Math Review:

Always Sometimes Never

Answer each question and review each slide to see explanations.

Open Ended

Proportional relationships have positive slopes...

Always, Sometimes, or Never? Explain your answer.

Sometimes!

Proportional relationships can have either a positive or negative slope.

Open Ended

Integers are Rational numbers...

Always, Sometimes, or Never? Explain your answer.

Always!

Integers are a subset of Rational Numbers. (They're inside the Rational bubble)

Open Ended

Rational Numbers are Integers...

Always, Sometimes, or Never? Explain your answer.

Sometimes!

A Rational number can be an Integer. (4/1 is the same as 4)

Multiple Choice

The y-intercep is found when x=0...

• Always

• Sometimes

• Never

Always!

"When x is 0, y be your hero!"

Open Ended

Square roots are Rational Numbers...

Always, Sometimes, or Never? Explain your answer.

Sometimes!

Perfect squares like $\sqrt{4}$  =2 give you a Rational Number. But square roots like  $\sqrt{3}$  give you Irrational numbers because the decimal goes on forever with no pattern.

Open Ended

 $7.98\times10^{-3}$ can be found by moving the decimal 3 places to the left...

Always, Sometimes, or Never? Explain your answer.

Always!

Because the exponent is "-3" that tells us that the number is small, and we need to move the decimal 3 places to the left to get Standard Notation: .00798

Multiple Choice

Graphs that go through the origin are proportional...

• Always

• Sometimes

• Never

Sometimes!

To be proportional, a graph needs to:

1. Go through the origin.

2. Be linear (a straight line)

Multiple Choice

B is the AREA for a base on a prism or pyramid

• Always

• Sometimes

• Never

Always!

Capital B always stands for "area of the base". To use a formula that has B, you'll need to find B first.

Ex: Volume of a Cylinder = Bh, where B stands for Area of the Base (circle)

Open Ended

Transformations preserve congruence and orientation...

Always, Sometimes, or Never? Explain your answer.

Sometimes!

"Preserving Congruence" means that the figure stays the same size/shape.

Dilation DOES NOT preserve congruence since it changes the size.

Multiple Choice

Functions have exactly one y-value for every x-value.

• Always

• Sometimes

• Never

Sometimes!

To be a function, the y-values can repeat, but the x-values CANNOT repeat.

"One input (x) for every output (y)"

End of Review!

If you have any questions, please let Ms. Trevino know