Question

2. For drawing the graph of 5x + 2y = 16, if x = 2, what is the value of y?
A. 8
B. 11
D. 14
C. 3

3. What is the value of Dg for the simultaneous equations 3x + 2y + 11 = 0 and 7x – 4y = 9?
A. 62
B. – 62
C. 26
D. - 26
4. What is the value of k, for which the simultaneous equations 2x + 3y = 8 and 6x - ky = 24
have infinitely many solutions?
A. – 9
B. – 6
C. 6
D. 9
5.Except which value of k does the simultaneous equations 5 – kx = 10y and x + 15y = -1
have a
unique solution?
A. 3/2
B. 2/3
C.-3/2
D.-2/3


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Answer 1

Answer:

for 2nd ans is 3 and for 4th que ans is 9