8th Grade Math Practice STAAR

Front

What is the order of the numbers -1 3/4, -√9, -3.2, -π from greatest to least?

Back

-1 3/4, -√9, -π, -3.2

Front

What is a function in mathematics?

Back

A relation where each input has exactly one output.

Front

How do you calculate the remaining cost after a scholarship and loan?

Back

Total cost - (Scholarship + Loan)

Front

What is the dilation rule for enlarging a shape?

Back

(x, y) → (kx, ky) where k > 1.

Front

What is the equation for a linear relationship with a fixed monthly fee and variable cost?

Back

y = mx + b, where m is the variable cost per unit and b is the fixed fee.

Front

How do you determine if a graph represents y as a function of x?

Back

Use the vertical line test: if a vertical line intersects the graph more than once, it is not a function.

Front

What is the minimum monthly earning needed to cover a remaining cost of $1,500 in 5 months?

Back

$300 per month.

Front

What does the term 'dilation' mean in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What is the significance of the slope in a linear equation?

Back

It represents the rate of change of y with respect to x.

Front

How do you find the total cost of using a service with a fixed fee and variable charges?

Back

Add the fixed fee to the product of the variable charge rate and the quantity used.