Solve the simultaneous equations y = 3x; 4y - 5x =14
a
.-2,-6
b
2,6
c
2,-6
d
-2,6
e
-1,-3
Explanation
Correct Option
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knowitall1
1 year ago
y = 3x ... (i);
4y - 5x =14 ... (ii)
Substitute y=3x into equation (ii) because the value of y is already given
4(3x) -5x = 14
12x -5x = 14
7x = 14
x=14/7
x=2
subsitute x=2 into equation (i)
y=3(2)
y=6
