Answer:
Range!
Step-by-step explanation:
It's the range because it's subtracting largest and smallest number in the set.
<span>Linear relations are not functions when they appear graphically as:
Vertical lines
One x not one y</span>
Answer:
(1/2)z
Step-by-step explanation:
The answer is 7x = 6(x + 15)
x - Jim's rate
y - Pete's rate
<span>Jim completed half the floor in 7 hours: 7x = half of the floor
</span><span>Pete completed the other half of the floor in 6 hours: 6y = half of the floor
So: 7x = 6y
</span><span>Pete can lay 15 more tiles per hour than Jim: y = x + 15
</span>7x = 6y
y = x + 15
Substitute the second equation into the first one:
7x = 6(x + 15)
