What is the x-intercept?

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Presentation transcript:

What is the x-intercept? 5-5 Standard Form What is the x-intercept? The x-coordinate of a point where a graph crosses the x-axis. (x, 0) What is Standard Form of a Linear Equation? The standard form of a linear equation is: Ax + By = C, where A, B, and C are integers, and A and B are not both zero.

How do I find the x-intercept? 5-5 Standard Form How do I find the x-intercept? Step 1: To find the x-intercept, substitute 0 for y. Step 2: Solve for x. How do I find the y-intercept? Step 1: To find the y-intercept, substitute 0 for x. Step 2: Solve for y.

How do I use intercepts to graph a line? 5-5 Standard Form How do I use intercepts to graph a line? Step 1: Find the x-intercept and the y-intercept. Step 2: Plot the x- and y-intercepts. Step 3: Draw a line through the two points.

What are the properties of Standard Form? If A = 0, then the equation can be written in the form y = b, where b is a constant. The graph is a horizontal line. If B = 0, then the equation can be written in the form x = a, where a is a constant. The graph is a vertical line.