Math Scale

Information for the Teacher

Subject:
Algebra I / Domain:
Reasoning with Equations and Inequalities / Topic:
Graphing systems of equations
Cluster Statement:
Represent and solve equations and inequalities graphically
Standard(s):
A.REI.11 Explain why the x-coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x); find the solutions approximately, e.g., using technology to graph the functions, make tables of values, or find successive approximations. Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. / DOK:
3
Potential Mathematical Practice Standard(s):
MP3 Construct viable arguments and critique the reasoning of others.
MP6 Attend to precision.
MP5 Use appropriate tools strategically.
Notes:
An example of score 1 and 2 : 4x + 2 = 3x - 5 becomes the system y = 4x + 2 and y = 3x - 5

Mathematics

Topic: Graphing systems of equations
Scale
Score
4.0 / I can write and solve the system of equations that best models a real world situation and explain the solution in context.
/ I can explain why the x-coordinate(s) of the point(s) where the graphs intersect are the solution(s) to the equation that created the system.
I can find the solutions of a system of equations (including linear, quadratic, exponential, and absolute value) using the following:
  • technology to graph
  • technology to make a table

Score
2.0 / I can use technology to make a table of values.
I can use technology to make a graph.
I can break down a single equation, writing it as a system of equations (y =).
Score
1.0 / I can identify the system of equations that represents a given single equation.
I can define a system of equations.
Score
0.0 / I cannot yet define a system of equations.

M.ALG1.A.REI.11 02.18.2015