Systems of Linear Equations Recalling Prior Knowledge.

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Presentation transcript:

Systems of Linear Equations Recalling Prior Knowledge

Recall Prior Knowledge Graphing linear equations using a table of values (function table).

Recall Prior Knowledge To graph a linear equation, you can first construct a table of x and y values. For example, you substitute x = 0 in the equation y = 2x + 1 to get the corresponding value of y.

Recall Prior Knowledge x0123 y = 2x

Recall Prior Knowledge From the table of values, you plot the pairs of values on a coordinate grid. Then join the points using a straight line to graph the linear equation.

Recall Prior Knowledge

Quick Check Copy and complete the table of values for the linear equation. Then draw its graph on a coordinate grid.

Quick Check x0123 y = 5x????

Quick Check

Recall Prior Knowledge Graphing linear equations using slopes and y- intercepts.

Recall Prior Knowledge You can also graph linear equations by recognizing that linear equations have the form y = mx + b, where m is the slope and b is the y-intercept. For example, for y = 2x + 1, the graph has slope 2 and intersects the y-axis at 1.

Recall Prior Knowledge

Quick Check 1.y = 5x 2.y = 2x y = x – 2

Quick Check

Assignment: Assessing Your Prior Knowledge You are assigned problems 1 – 19 on page 367 in the red algebra I book. Remember, you can use your notes from previous units as well as the red algebra I book if you need help correctly solving the problems.