STAAR Review Algebra I

What is the domain of the function graphed below?

• 0 < x < 5

• 2 < x < 5

• 0 < x < 4

• 0 < x < 2

What is the value of x in the solution to the system of equations below:

y = -2/3x+2

x+4y = 13

• 3

• -4

• -3

• 4

What is the equation of the line passing through the point (-3, -2) with a slope of 4?

• y + 3 = 4 ( x + 2)

• y - 3 = 4 ( x - 2)

• y + 2 = 4 ( x - 3)

• y + 2 = 4 ( x + 3)

Which situation could be represented by f(n) = 1000 ( 1 - 0.025)ⁿ?

• Mr. Martinez opened a bank account with an initial deposit of $1000. The account pays 2.5% interest compounded annually.

• A heard of 1000 deer grows by 2.5% per year.

• Mr. Elizondo invested $1000 in stocks. The value of her investment has decreased by 2.5% per year.

• Mr. Garza opened a bank account with an initial deposit of $25. He deposited an additional $1000 each year after that.

Which statement about the quadratic functions below is false?

• The graphs of two of these functions have a minimum point.

• The graphs of all of these functions have the same axis of symmetry.

• The graphs of two of these functions do not cross the x-axis.

• The graphs of all of these functions have different y-intercepts.

If f(x)=3x², which is closest to the value of x when the value of the function is 150?

• 5.0

• 7.1

• 8.5

• 21.2

What is the slope of this equation?

18 = -3x + 2y

• 9

• -6

• 3/2

• -3

Which equation represents the same relationship?

• y + 67 = 7/8 ( x - 78 )

• y + 78 = 7/8 ( x - 67 )

• y + 67 = 6 ( x - 78 )

• y + 67 = 6 ( x - 67 )

What is the equation in slope-intercept form of the line that passes through the points (-12, -52) and (8, 23)?

• y = 4/15 x - 67/15

• y = 15/4 x - 67/15

• y = 4/15 x - 7

• y = 15/4 x - 7

Which equation best represents the axis of symmetry of the function?

f(x) = x² + 2x - 8

• y = -1

• x = -1

• y = -8

• x = 1