# STAAR TEST ALGEBRA 1 PRACTICE TEST ONLINE

Problem 1 :

Which expression is equivalent to (5rt - 3rw - 8tw) + (6rt - 4rw + 2tw) ?

A) 11rt + rw - 10tw     B) 11rt - 7rw - 6tw    C) 11rt + rw - 6tw

D) 11rt - 7rw - 10tw

Solution

Problem 2 :

The solutions to p(x) = 0 are x = -7 and x = 7. Which quadratic function could represent p ?

F) p(x) = x2 - 49        G) p(x) = x2 + 49     H) p(x) = x2 - 14

J) p(x) = x2 + 14

Solution

Problem 3 :

Two points are plotted on the grid.

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

 A) y = -(2/3)x - (11/3) C) y = -(2/3)x - (10/3) B) y = -(11/3)x - (2/3) D) y = -(10/3)x - (2/3)

Solution

Problem 4 :

The table shows the value in dollars of a motorcycle at the end of x years.

Motorcycle

Which exponential function models this situation ?

F) v(x) = 9,000(1.1)x             G) v(x) = 9,000(0.9)x

H) v(x) = 8,100(1.1)x            J) v(x) = 8,100(0.9)x

Solution

Problem 5 :

What is the positive solution to x2 + 9x - 22 = 0 ?

Solution

Problem 6 :

A university will spend at most \$4, 500 to buy monitors and keyboards for a computer lab. Each monitor will cost \$250, and each keyboard will cost \$50.

Which inequality represents all possible combinations of x, the number of monitors, and y, the number of keyboards, the university can buy for the computer lab ?

F) 250x + 50y < 4,500        G) 250x + 50y ≤ 4,500

H) 50x + 250y < 4,500         J) 50x + 250y ≤ 4,500

Solution

Problem 7 :

A construction manager is monitoring the progress of the build of a new house. The scatterplot and table show the number of months since the start of the build and the percentage of the house still left to build. A linear function can be used to model this relationship.

Which function best models the data ?

A) y = -13.5x + 97.8         B) y = -13.5x + 7.3

C) y = 97.8x - 13.5           D) y = 7.3x - 97.8

Solution

Problem 8 :

Given f(x) = x2 - 36, which statement is true ?

F) The only zero, 6, can be found when 0 = (x - 6) (x - 6).

G) The only zero, 18, can be found when 0 = (x - 18) (x - 18).

H) The zeros, -6 and 6, can be found when 0 = (x + 6) (x - 6).

J) The zeros, -18 and 18, can be found when 0 = (x + 18) (x - 18).

Solution

Problem 9 :

A function is shown.

f(x) = 7 - 4x

What is the value of f(-5) ?

A) 27          B) -13        C) -15         D) 140

Solution

Problem 10 :

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

Solution

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