Find the x-intercepts and vertex of a quadratic function by writing it in intercept form and solve real-world problems.
An old bridge consists of a 350 ft. wood bridge, followed by 1200 ft. of a modern metal bridge, closed out by another 350 ft. wood bridge. However the wood is starting to rot so the city has decided they will rebuild the bridge completely, using only the parabola design. The current equation for the parabolic section of the bridge is
Move the red point to see how the bridge will look after the parabola is extended to cover the entire river (not drawn to scale).
This video demonstrates a sample use of graphing quadratic functions in intercept form.
This video provides an explanation of the concept of graphing quadratic functions in intercept form.
Practice Graphs of Quadratic Functions in Intercept Form questions
With the KWL chart, reflect on your prior knowledge, ask questions that you are curious about,and come up with answers from the reading.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Discover how parabolas are used in supporting the Golden Gate Bridge and other suspension bridges.
Discover how the Hubble Space Telescope uses parabolas to capture the details of faraway galaxies.
Find out what happens when comets cross paths with other celestial bodies.