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secondary 4 | A Maths
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Candice
Candice

secondary 4 chevron_right A Maths chevron_right Singapore

Good evening! I cant get the answer, what i got was x=-0.5 and y=-1.5

Date Posted: 1 month ago
Views: 11
Eric Nicholas K
Eric Nicholas K
1 month ago
Good evening Candice! Two linear simultaneous equations in two variables will have exactly one solution in the great majority of situations. We can always check back our values of x and y into the equations to see if they are valid. The given solution is valid for the first equation but fails in the second equation.

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Eric Nicholas K
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3843 answers (Tutor Details)
1st
Good evening Candice! I obtained x = -0.5, y = -1.5 for my workings. I used an ordinary method instead of matrix method as the matrix method of solving simultaneous equations is not in your syllabus for E Maths and A Maths.
J
J
1 month ago
The answer would be valid if +10 is changed to + 170
Candice
Candice
1 month ago
Oh okay thanks!