- LINEAR EQUATIONS AND INEQUALITIES–
322.Given that both of the following equations
must be satisfied simultaneously, use the sub-
stitution method to determine the value ofx.
2 x + y= 6
2 y+4x= 12
a.–2
b. 0
c. 1
d. 3
323.Given that both of the following equations
must be satisfied simultaneously, use the sub-
stitution method to determine the value of
√ab.
2 a= b+ 1
3(a– b) = –21
a.^49
b.^23
c.^34
d.^43
e.^32
324.Given that both of the following equations
must be satisfied simultaneously, use the sub-
stitution method to determine the value ofb.
–7a + 4 b= 25
b+ a= 13
a.–3
b. 4
c. 12
d. 13
e. 16
325.Given that both of the following equations
must be satisfied simultaneously, use the
substitution method to determine the value
ofa.
7(2a + 3 b) = 56
b+ 2a= –4
a.–5
b.–4
c.–2
d. 4
e. 6
326.Given that both of the following equations
must be satisfied simultaneously, use the
substitution method to determine the value
ofdc.
c– 5 d– 2 = 0
c– 6d= 0
a. 2
b. 6
c. 8
d. 12
e. 14
327.Given that both of the following equations
must be satisfied simultaneously, use the
substitution method to determine the value
ofxy.
–5x + 2y= –51
–x – y = – 6
a.–27
b.–18
c.–12
d.–6
e.–3