Find the coordinates of the turning point of the equation y =x^2-8x+10

We know that the turning point of this quadratic will be a minimum point because the coefficient of x2 is positive (1). To find the turning point, we must complete the square: y= (x-4)2 -16 +10 so y= (x-4)2-6. Since the value of the brackets is a square number, it must be greater than or equal to 0, so the smallest number y can be is equal to when the brackets is 0. y = (0)2-6. So at the minimum point, y =-6. Since the brackets must equal 0, x-4 = 0 so x=4. Hence the turning point is at (4,-6)

SR
Answered by Sita R. Maths tutor

6677 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

If the hypotenuse of a triangle is 7cm and another side is 4cm, what's the length of the other side? How can I work this out?


Nadia has £5 to buy pencils and rulers. Pencils are 8p each. Rulers are 30p each. She says “I will buy 15 pencils. Then I will buy as many rulers as possible. With my change I will buy more pencils.” How many pencils and how many rulers does she buy?


Solve algebraically the simultaneous equations: x^2+y^2 = 25 and y-3x=13


(2x+3)^2


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:

© 2026 by IXL Learning