How do you solve #12x^2=-11x+15# by graphing?
2 Answers
Explanation:
First make the equation equal to zero.
Then sketch the curve
graph{-12x^2-11x+15 [-19.66, 20.34, -5.68, 14.32]}
The answers to
(The equation of the
To see if you got it right, use the quadratic formula.
Solution by graphing
Explanation:
Given:
I choose to make the
Add
Subtract 15 from each side
We are instructed to solve by graphing. Unless the values are obvious you will not obtain exact values this way. The values obtained are down to how well you draw your curve and your observation of the relevant values.
You would do this:
Set
You are particularly interested in
Produce a table of values. For example you may choose the following set of values for
You would then draw your graph and determine the
I am using dedicated software that actually gives the answer: