Functions, Equations, and Graphs Unit Test Part 1
What is (are) the x-intercept(s) of the function graphed above? 0 only -3, 0, and 4 -4, 0, and 3 -12.5 and 21
-3, 0, and 4
What is f(-3) if f(x) = |2x - 1| - 5?
2
An electronics store makes a profit of $25 for every portable DVD player sold and $55 for every DVD recorder sold. The manager's target is to make at least $225 a day on sales of the portable DVD players and DVD recorders. Write an inequality that represents the number of both kinds of DVD players that can be sold to reach or beat the sales target. Let p represent the number of portable DVD players and r represent the number of DVD recorders.
25p + 55r ≥ 225
Which of the following shows the graph of the inequality y > -x - 2?
A. https://dlap.gradpoint.com/dlap.ashx?cmd=getresource&entityid=12372948&path=content%2Fmedia%2F555662-3232013-64704-AM-180040799.gif&version=1 - this link shows the answer
Which graph best represents the following equation? y + 3 = |x - 5|
A. https://dlap.gradpoint.com/dlap.ashx?cmd=getresource&entityid=12372948&path=content%2Fmedia%2F555662-3232013-65057-AM-1582756809.gif&version=2 - this link shows the answer
Which graph best represents the equation -5x + 2y = 2?
A. https://docs.google.com/document/d/1MajaQTyH9nxgbz9uy_81S83p6l4vl1LfssMOk-lThFA/edit?usp=sharing - this link shows the answer
The table below shows the relationship between the number of lawns mowed and money earned by David's Lawn Mowing Service. Which graph best models the relationship in the table?
B. https://dlap.gradpoint.com/dlap.ashx?cmd=getresource&entityid=12372948&path=content%2Fmedia%2F710999-1032013-113511-AM-1328241661.jpg&version=2 -this link shows the answer
Which does not describe the same situation?
C. https://dlap.gradpoint.com/dlap.ashx?cmd=getresource&entityid=12372948&path=content%2Fmedia%2F710999-9252013-92540-AM-818764663.jpg&version=2 - this link shows the answer
The graph of y = x^2 is shown below. If graphed on the same grid, which of the following could be the graph of y = 2.5x^2?
D. https://dlap.gradpoint.com/dlap.ashx?cmd=getresource&entityid=12372948&path=content%2Fmedia%2F555662-3232013-65414-AM-1008383046.gif&version=2
Which procedure could be used to graph the following equation? y=1/4x-1
Plot the y-intercept (0, -1) and use the slope of 1/4 to find a second point.
Which equation best represents the line graphed above? x = 4 x = -4 y = x - 4 y = -4
x = -4
Which equation defines the graph of y = x² after it is shifted vertically 3 units down and horizontally 5 units left?
y = (x + 5)² - 3
Which equation best represents the graph shown above? y = -(x + 1)² - 1 y = (x - 1)² y = (x + 1)² y = -(x - 1)² + 1
y = (x - 1)²
What is an equation of the line in slope-intercept form? m = 2 and the y-intercept is (0, 3)
y = 2x + 3
Which equation best represents the line graphed above? y = -x + 4 y = x + 4 y = x - 4 y = -x - 4
y = x + 4
Write the equation in slope-intercept form. What are the slope and y-intercept? -2x - 11y = 5
y =-2/11 x -5/11; slope: -2/11; y-intercept: -5/11
Which of the following inequalities is shown in the graph? y≤ -5/2x+5 y≥ 5/2x+5 y≤ 5x+5/2 y≤ 5/2x+5
y≤ 5/2x+5
Which set of ordered pairs in the form of (x, y) does not represent a function of x?
{(0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)}