Algebra Unit 2
x + y = 2 2y - x = 10
(-2,4)
x - 2y = 2 3x + y = 6
(2,0)
Determine which of the following is NOT an arithmetic sequence.
- 24, -12, -6, -3, ...
Determine which of the following is NOT an arithmetic sequence.
10, 20, 40, 80, ...
What is y + 4 = 2/3(x - 6) in Standard Form?
2x - 3y = 24
If d(x) = 3x + 5, what is the value of d(-1)?
A. 2 Steps: Replace x with -1 and solve the equation.
y + x = -2 y = -x - 2
Answered : no solution I think: infinite solutions
If m(x) = 5x + 7, what is the value of m(x - 3)?
B. 5x - 8 Steps: Replace x with x-3 and solve the equation.
Which of the following best describes the vertical line test?
B. If a vertical line can be drawn so that it intersects the graph more than once, then the graph is NOT a function.
What is the graph of 6x + 3y = -24 if the domain is all the real numbers?
C. Graph 5
y > 2x + 1 y < -x + 1 What statement best describes the graph of the given system?
C. The solution contains the entire first quadrant. Incorrect
Consider the graph of 3x - y ≥ 1 and decide if the statement is true, or false. The boundary line has a negative slope.
False
Consider the graph of 3x - y ≥ 1 and decide if the statement is true, or false. The boundary line is dashed.
False
y > 2x + 1 y < -x + 1 Which point is in the solution set to the given system?
Selected Answer: B. (-1, 5) Incorrect
Consider the graph of 3x - y ≥ 1 and decide if the statement is true, or false. The point (0, 0) is NOT in the solution.
True
Consider the graph of 3x - y ≥ 1 and decide if the statement is true, or false. The point (1, 2) is in the solution.
True
2y -4x = 2 y = -3x + 6
exactly one solution
x = -3 y = 2x + 1
exactly one solution
y = 2x + 1 y = 2x - 4
no solution
What is the equation in Point-Slope Form of a line that passes through (-2, 5) with slope 3?
y + 5 = 3(x - 2) Incorrect
Which pair of lines IS perpendicular?
y - 12 = 4(x + 3)y - 12 =-1/4(x+3)
What is the equation in slope-intercept form of the line perpendicular to y = 2x - 4 that passes through the point (-2, 6)?
y = -1 2 x - 5 Incorrect
What is y + 7 = -2(x + 3) in Slope-Intercept Form?
y = -2x - 13
What is the equation in Slope-Intercept Form of a line that passes through (1, 2) and (-1, -2)?
y = 2x
What is the equation in slope-intercept form of the line parallel to y = 2x - 4 that passes through the point (-3, 4)?
y = 2x + 10
What is the equation in Slope-Intercept Form of a line that passes through (1, 5) with slope 2?
y = 2x + 3
What is the solution set for |r + 5| < 9?
{ r | -14 < r < 4}
What is the solution set for |a - 4| = 3?
{1, 7}
