FREE DOWNLOAD
Help your students prepare for their Maths GCSE with this free quadratic graphs worksheet of 30+ questions and answers
You can unsubscribe at any time (each email we send will contain an easy way to unsubscribe). To find out more about how we use your data, see our privacy policy.
Quadratic graphs are a way of visually representing quadratic functions. Quadratic functions are functions in which the highest power of the variable is 2 and may also contain terms in x or constants. The general form for a quadratic function is y=ax2+bx+c.
There are two main methods for plotting graphs of quadratic functions. The first is to use the equation of the line to create a table of values of x and y. These can then be plotted as coordinates on a set of axes.Β
The second method for plotting quadratics is to create a sketch of the graph. When sketching quadratics, we need to determine the y intercept of the graph, the x intercepts of the graph and the turning point, or vertex, of the graph. If the equation of the line is y=ax2+bx+c, then the y intercept is c and the x intercepts are the roots of the equation ax2+bx+c=0 (since y is 0 along the x axis). The roots to this quadratic equation could be found by factorising or using the quadratic formula. The turning point of the graph can be found by completing the square.Β
A quadratic function will always produce either a u or n shaped graph called a parabola. If the coefficient of x2 is positive, it will be u shaped and if it is negative then it will be n shaped. Quadratics must be drawn as a smooth curve.
Looking forward, students can then progress to additionalΒ types of graph worksheetsΒ and on to moreΒ algebra worksheets, for example a factorising worksheet or simultaneous equations worksheet.
For more teaching and learning support on Algebra our GCSE maths lessons provide step by step support for all GCSE maths concepts.
With Third Space Learning's secondary maths tutoring programmes, students in Year 7-11 receive regular one to one maths tutoring to address gaps, build confidence and boost progress.
"My confidence in the tutoring is high. We've had some phenomenal results. I even had one girl get a Grade 8 this year; she came to every tutoring session."
Stacey Atkins, Maths Director, Outwood Grange Academies Trust