STAAR Algebra Questions

Which function is best represented by the graph?

What is the equation in slope-intercept form of the line that crosses the x-axis at 36 and is perpendicular to the line represented by 4 y = − x + 5 9 ?

What is the positive solution to this equation?

4x² + 12x = 135

• 7.5

• 0

• -7.5

• 4.5

Which expression is equivalent to (10 + 7r− r²) + (−6r² − 18 + 5r)?

A company collected data for the number of text messages sent and received using a text-message application since October 2011. The table shows the number of text messages sent and received in billions over time. The data can be modeled by a quadratic function.

A company advertises on a website. A worker tracked the number of visits to the website and the number of clicks on the advertisement. The table shows the data for several days. A linear function can be used to model the data.

• 77

• 137

• 83

• 105

The graph of a linear function is shown on the grid. Which equation is best represented by this graph?

Which expression is equivalent to (xy^-6)² for all values of x and y where the expression is defined?

The graph of linear function f passes through the point

(1, −9) and has a slope of -3. What is the zero of f ?

• 2

• 4

• -6

• -2