Question

Question 20

The solution to the linear inequality

− 10 x + 2 y > − 4

will be the half-plane lying

a) on and below the solid line   − 10 x + 2 y = − 4.

b) below the solid line   − 10 x − 2 y = − 4.

c) above the dashed line   − 10 x + 2 y = − 4.

d) on and above the solid line   − 10 x + 2 y = − 4.

e) below the dashed line   − 10 x + 2 y = − 4.

f) None of the above.

Question 19

Find the point of intersection of the lines

3 x − 6 y = 12
− 4 x + 8 y = − 16

a) No point of intersection.

b) Infinitely many points of intersection.

c) (^-4⁄₃ , ^-8⁄₉)

d) (²⁰⁄₉ , 3 )

e) (^-20⁄₉ , ⁸⁄₃)

f) None of the above.

Question 18

Given the system of equations:

y  =  − 10 x  −  10
− 7 x − 10 y  =  − 5

Find the  y-coordinate of the point of intersection of the two lines.

a) ⁴⁰⁄₉₃

b) ^-120⁄₇

c) ⁴⁰⁄₃₁

d) ⁵⁰⁄₉₃

e) ^-20⁄₉₃

f) None of the above.

Answer 1