Inside the Classroom

Week of April 23

This week we had a quiz on Tuesday April 24th and reviewed how to graph equations on the coordinate plane. The key points to remember are:

• In a linear equation, y = mx+b, the coordinate point (0, b) is the y-intercept and m is the slope (rate of change) of the line.
• You need a minimum of two points to graph a line but the more points you have, the better.

Week of April 16

This week we learned how to graph Piecewise Functions. The key points to remember are:

• A Piecewise function is a function composed of multiple smaller functions over a specified domain, or specified x values.
• Open circles are used when the point is not included in the graph. Closed circles are used when the point is included in the graph.

Week of April 9

This week we learned how to solve a System of Quadratic and Linear equations. The key points to remember are:

• Solutions for a System of Equations are where the graphs intersect.
• Quadratic Functions are curved so there are a maximum of two possible solutions.

Week of March 26

This week we learned how to transform parabolas algebraically and on the coordinate plane. The key points to remember are:

• If your transformation is f(x) + a, the graph will shift up if a is positive and down if a is negative
• If your transformation is af(x) then the graph will shrink if the absolute value of a is greater than 1 and expand if the absolute value of a is less than 1.

Week of March 19

This week we learned how to graph parabolas (quadratic functions) on a coordinate plane by finding key points:

• The roots (x-intercepts)
• The y-intercept
• The vertex

Week of March 12

This week we learned how to calculate the range and domain of a function. It is key to remember:

• Domain: All possible x values of a function
• Range: All possible y values of a function