STAAR Cumulative Practice

The domain and range of part of linear function r are given.

x > 5

y < 2

Which graph could represent this part of linear function r ?

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A.2(A)

Two points are plotted on the grid.

Which equation in slope-intercept form best represents the line that passes through these two points?

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A.2(B)

The table represents some points on the graph of a linear function.

Write a function that represents this relationship.

y =​ ​ ​ (a)   x ​ ​ (b)  

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A.2(C)

Printer ink cost $18.99 per cartridge. The company that sells the ink cartridges charges a flat rate shipping fee of $7.95, no matter the number of cartridges purchased in a single order. Which linear function models the total cost, t, for a single order of c cartridges?

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A.2(C)

The conversion of degrees Celsius to degrees Fahrenheit can be represented by a linear relationship. The graph shows the linear relationship between y, the temperature in degrees Fahrenheit, and x, the temperature in degrees Celsius from the feezing point of water.

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A.2(C)

A line is graphed on a coordinate grid.

Which statement about the line is true.

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A.2(G)

The rate of chang of height off the ground with respect to the number of steps is ​ (a)   at a rate of ​ ​ (b)   in. per step. ​

• increasing
• 7
• decreasing
• 14
• 1/7
• 1/14

Answer explanation

Desmos!

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A.3(B)

The graph of a linear function, f, is shown.

What is the zero of f?

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A.3(C)

Which graph best represents y = − 4 ( x + 3 ) − 2 ?

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Answer explanation

Type equation into DESMOS.

The line has a negative slope and the x-intercept is between -3 and -4.

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A.3(C)

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Answer explanation

DESMOS!

Type f(x) on the first line

Type g(x) on the second line

Match to the given graphs.

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A.3(E)