Given:
The values of input and outputs are given
Output is increasing by 9 for the increase in x values.
The top right is the answer. The base should be square with lengths of 8 and the height is 10.
Answer: (x,y) = (-1, 1)
This means that x = -1 and y = 1
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Explanation:
The first equation says that y is the same as 2x+3
That allows us to substitute y for 2x+3 in the second equation like so:
2x+5y = 3
2x+5( y ) = 3
2x + 5(2x+3) = 3 .... y replaced with 2x+3
2x+10x+15 = 3
12x+15 = 3
12x = 3-15
12x = -12
x = -12/12
x = -1
Then we'll substitute this into the first equation to find y
y = 2x+3
y = 2(-1) + 3 .... x replaced with -1
y = -2+3
y = 1
Together x = -1 and y = 1 pair up to form the ordered pair solution (x,y) = (-1,1)
If you were to graph y = 2x+3 and 2x+5y=3 on the same xy grid, then you should see that the two lines intersect at the location (-1,1). This is a visual way to determine the solution quickly through use of a graphing calculator.
Answer:
k = -2
Step-by-step explanation:
If 
Then
So
From this follows k = -2
Answer:
- No
- yes
- yes
- yes
- No.
- yes
- No
- yes
- No.
- yes
- No
- No
- Yes
- Yes
- No
These are the answers according to serials.
