Unit rate means how much does it cost for 1 unit
140 for 18ft^2
divide by 18
140/18=7.77777777777777
so the unit rate is $7.78 per square foot
Jan is not correct. The opposite of any number will not always be a positive. This is because the opposite of a positive number is negative and the opposite of a negative number is positive.
Basically, opposite numbers are numbers that are the same distance to 0 on a number line. If we were to have a positive 1, the opposite of that number would be a -1, because that's equally distant from 0 on a number line.
Answer:
The table represents a function and the slope is -1/2
Step-by-step explanation:
Here, we want to know if the given table is a function
For a relation to be a function, no two y values have same x value
however, 2 x values can have same y value
Looking at the table, we can conclude that what we have is a function
To find the slope, we select any two points and apply the slope formula
m = (y2-y1)/(x2-x1)
(x1,y1) = (6,-2)
(x2,y2) = (-2,2)
m = (2 -(-2))/(-2-6) = 4/-8 = -1/2
-4z would be the equivalent expression