Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
junior college 1 | H1 Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
How to deduce a Quadratic formula from a graph?
Date Posted: 7 years ago
Views: 588
You start with a general equation for quadratic formula in perfect square form:
a(x-b)^2 + C, where point (b,c) is the point if inflection.
You are given the minimum point of the graph to be (1,-4000). So you can substitute it to the equation, leaving only a to solve.
Im not sure if you are given any further information, but if you are allowrd to estimate, you can try estimating the x axis intersection at y=0 near x=2 to x=3. Once you estimate that value, you can substitute into the equation and find the value of a
If you are given the coordinates, or able to estimate the coordinates, you can try using linear law as well as linear regression to find the equation
a(x-b)^2 + C, where point (b,c) is the point if inflection.
You are given the minimum point of the graph to be (1,-4000). So you can substitute it to the equation, leaving only a to solve.
Im not sure if you are given any further information, but if you are allowrd to estimate, you can try estimating the x axis intersection at y=0 near x=2 to x=3. Once you estimate that value, you can substitute into the equation and find the value of a
If you are given the coordinates, or able to estimate the coordinates, you can try using linear law as well as linear regression to find the equation
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Solution
Date Posted:
7 years ago
360 Tutoring Program