STAAR Review STRATEGY 2(2023)

Front

What is a function in mathematics?

Back

A relation where each input (x-value) is associated with exactly one output (y-value).

Front

What does it mean for a relation to represent y as a function of x?

Back

It means that for every x-value, there is only one corresponding y-value.

Front

What is the definition of dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape, using a center of dilation and a scale factor.

Front

What is the formula to find the scale factor in dilation?

Back

Front

What does it mean if a set of ordered pairs does not represent y as a function of x?

Back

It means that at least one x-value is associated with more than one y-value.

Front

How can you determine if a relation is a function using a set of ordered pairs?

Back

Check if each x-value appears only once in the set.

Front

What is the significance of the coordinates in a geometric figure?

Back

Coordinates define the position of points in a plane, allowing for the representation of shapes and transformations.

Front

What is the center of dilation?

Back

The fixed point in a dilation transformation from which all points are expanded or contracted.

Front

What is the effect of a scale factor greater than 1 in dilation?

Back

The figure enlarges.

Front

What is the effect of a scale factor less than 1 in dilation?

Back

The figure shrinks.