Plot the graph, y=2x^2 -7x +4

3 Mehods:Step 1: Does the function factorise. In this case yes it does. giving y=(2x+1)(x-4)Method: Find the factors of the contract in this case (4). Which are (2,2) , (4,1)We know that a quadratic must factorise into 2 brackets (2x+/- Contant) (x+/-contant) Trial and error to find exact values. Then equalise each bracket to 0 and plot graph going through -0.5 and 4 on the x-axis. U-shape

Answered by Theodore W. Maths tutor

2314 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A line intercepts point A at (4,4) and point B (8,12). Find the gradient and the intercept of the line.


A farmer has a garden shaped into an isosceles triangle. Its side is 7m. He needs to enclose the perimeter, using copper wires, in order to avoid undesirable incidents. Each meter of copper wire cost 2£. How much does he need to pay to secure his garden?


Expand these Brackets


The normal price of a television is £1200. It is reduced to £970. Work out the percentage reduction. Give your answer to 1 decimal place.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences