To find the x-intercepts of a quadratic function using a graph, follow these simple steps:
Graph the Quadratic: First, draw the graph of the quadratic function. This usually looks like this: .
Identify the Axis: Next, look for where the curve (the line you just drew) crosses the x-axis. This is where .
Read the Coordinates: The points where the graph meets the x-axis are called x-intercepts. For example, if the curve crosses at the points and , then the x-intercepts are and .
Graphing makes it easy to see these intercepts!
To find the x-intercepts of a quadratic function using a graph, follow these simple steps:
Graph the Quadratic: First, draw the graph of the quadratic function. This usually looks like this: .
Identify the Axis: Next, look for where the curve (the line you just drew) crosses the x-axis. This is where .
Read the Coordinates: The points where the graph meets the x-axis are called x-intercepts. For example, if the curve crosses at the points and , then the x-intercepts are and .
Graphing makes it easy to see these intercepts!