Algebra 1 STAAR Review (#1)

Front

What is the process to simplify a fraction with variables?

Back

To simplify a fraction with variables, divide the coefficients and subtract the exponents of like bases in the numerator and denominator.

Front

Back

Front

What is the purpose of turning on Diagnostics in a graphing calculator?

Back

Turning on Diagnostics allows you to find the correlation coefficient of a scatterplot.

Front

What is the solution to the system of equations if x = 25?

Back

The value of x in the solution to the system is 25.

Front

How do you find the nth term of a geometric sequence?

Back

The nth term of a geometric sequence can be found using the formula: a_n = a_1 * r^(n-1), where a_1 is the first term and r is the common ratio.

Front

Which equation represents the nth term of the sequence 16, 64, 256, 1024, ...?

Back

The equation is a_n = 16(4)^(n - 1).

Front

What is the square root of 125?

Back

The simplified form of the square root of 125 is 5√5.

Front

What is the formula for the correlation coefficient?

Back

The correlation coefficient (r) is calculated using the formula: r = (nΣxy - ΣxΣy) / √[(nΣx^2 - (Σx)^2)(nΣy^2 - (Σy)^2)].

Front

What does it mean if a system of equations has no solution?

Back

If a system of equations has no solution, it means the lines represented by the equations are parallel and do not intersect.

Front

What is the common ratio in the sequence 16, 64, 256, 1024?

Back

The common ratio is 4, as each term is multiplied by 4 to get the next term.