Draw the following inequality on a graph: x^2+4x+1<-2

First we must ensure the equation is in a form that is easy for us to plot!This means we equate the quadratic to 0 by shifting the -2 to the other side. We do this by adding +2 to both sides.Now, we draw the equation as if there is no inequality; Draw it as if there is an equals sign. This will become apparent in a little while. We know from solving it that x = -3 or x = -1. Thus when we plot the equation, the curved shape of the quadratic equation intersects the x axis (when y=0) at -3 and -1.Now, we needed to plot the INEQUALITY on the graph, not the equation. Thus, we sub in the sign again.x^2+4x+1<-2x^2+4x+3=0x^2+4x+3 < 0This statement means the equation must be less than 0. Well, we already know the equation is also in the form (x+3)(x+1) = 0(x+3)(x+1) < 0On the graph when we plot the quadratic, we see the region that satisfies this statement is the small area between the curve and the grid!

SA
Answered by Saad A. Maths tutor

3214 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

£3000 is invested for 2 years at 3.8% per annum compound interest. What is the total interest earned over the 2 years?


How do you calculate ratios? Example question: 'White paint costs £2.80 per litre, Blue paint costs £3.50 per litre, White paint and blue paint are mixed in the ratio 3:2. Work out the cost of 18 litres of the mixture [4 marks]' AQA Mathematics (8300)


How do I solve a quadratic equation like x^2 - 2x - 35 = 0 without using a calculator?


Factorise 4xy-6xz


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning