Math Insight

Errors encountered

Errors occurred in the following questions: 2, 4

Solve system of two linear equations, some with a graph

Name:
Group members:
Section:
Total points: 4
  1. Solve the system of equations. \begin{align*} - 4 b + w &= 4\\ 2 b - w &= 2 \end{align*}
    $b = $

    $w = $

  2. Error in question

    The following errors occurred when rendering the question:

    • Invalid answer code from applet: A
    • Invalid answer code from applet: B
    • Invalid answer code from applet: C
    • Invalid answer code from applet: D
    • Invalid answer code from applet: lineAB
    • Invalid answer code from applet: lineCD
    To solve the system of equations, \begin{align*} - y + 9 &= 1\\ - 3 y - 12 &= 3, \end{align*} first plot the graph of the first equation with the thin green line and the graph of the second equation with the thick blue line. To change the lines, move the blue and green points with your mouse.
    Then, calculate the solution to the system of equations:
    $y = $

    $3 = $

  3. Solve the system of equations. \begin{align*} 2 p + v &= 1\\ p + v &= -2 \end{align*}
    $p = $

    $v = $

  4. Error in question

    The following errors occurred when rendering the question:

    • Invalid answer code from applet: A
    • Invalid answer code from applet: B
    • Invalid answer code from applet: C
    • Invalid answer code from applet: D
    • Invalid answer code from applet: lineAB
    • Invalid answer code from applet: lineCD
    To solve the system of equations, \begin{align*} - 2 z + 4 &= -2\\ - 3 z - 4 &= 2, \end{align*} first plot the graph of the first equation with the thin green line and the graph of the second equation with the thick blue line. To change the lines, move the blue and green points with your mouse.
    Then, calculate the solution to the system of equations:
    $z = $

    $-2 = $

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Advanced elementary math, 2013-2014