Eric Nicholas K's answer to Charlotte's Secondary 2 Maths Singapore question.
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Q6 requires you to do the reverse of quadratic equation solving.
Normally, to solve for the x-intercept of the equation, say, y = -4x2 + 10x + 24, you would set y = 0 and then proceed to solve -4x2 + 10x + 24 = 0, then factorise the equation and solve for x.
This time, we are given the final values of x and we need to reconstruct the equation of the curve, so we need to do the exact same steps but in reverse steps.
Normally, to solve for the x-intercept of the equation, say, y = -4x2 + 10x + 24, you would set y = 0 and then proceed to solve -4x2 + 10x + 24 = 0, then factorise the equation and solve for x.
This time, we are given the final values of x and we need to reconstruct the equation of the curve, so we need to do the exact same steps but in reverse steps.
Date Posted:
4 years ago
Thanks! :)
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