Answer:
Data Set 1 and 3.
Step-by-step explanation:
For a table to be a function, there cannot be multiple x values of the same number. This means that a function must be one-to-one.
When looking at the data sets, we can eliminate them by using this logic. Data Set 2 contains two y values at y = 6, as well as two x values at x = 1. Therefore, this is not a function.
Data Set 1 is the only table that represents a function because it consists of different x values without any repeating.
Data Set 3 also contains different x values without repetition. Each x value has a specific y value. This is a function as well.
Answer:
12.
a.
i. (x-9)(x-3)
ii. x = 9 or 3
b. (y+10(y-10)
Step-by-step explanation:
12.
a.
i.
Two numbers that multiply to make 27 and add to make -12 are: -9 and -3.
Put into brackets so you have: (x-9)(x-3)
ii.
Consider each bracket as its own equation.
x-9=0
x=9
x-3=0
x=3
b.
Difference of two squares
Answer:
11, <u>but see below.</u>
Step-by-step explanation:
I don't see the entire equation. The value of 3^2 + (8-2) - 4 is 11. If there is another number after the 4 (I see a "-," but nothing else), it must be added/subtracted from 11.
Answer:
228 feet
Step-by-step explanation:
Since M represents the number of lessons he completes,
sub M=8 into S=26M+20
S=26(8)+20
=228
<span>D. No, because one x-value corresponds to two different y-values.</span>