The first working out is correct, z = 3
It will become 61
because anything above 0.5 rounds up
Answer:
If x^2 = 1, then x = 1 is NOT true because x can also be -1.
9514 1404 393
Answer:
(a) not proportional
(b) k = 7/8
Step-by-step explanation:
When a linear equation is of the form ...
y = mx + b
with b ≠ 0, the relation is NOT PROPORTIONAL.
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If b=0, so the equation is of the form ...
y = kx
then the relation IS PROPORTIONAL. The constant of proportionality is k.
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(a) Not proportional
(b) Proportional with k = 7/8
