Answer:
3
Explanation:
First to find the slope you need to find two points. I chose 1,4 and 2,7 . First you minus 7-4 (y) and then you minus 2-1 (x). Which would result in 3/1
Answer:
A
Step-by-step explanation:
x. y = 28
check attachment
Answer:
(x, y) = (5, 1)
Step-by-step explanation:
To <em>eliminate</em> x, you can double the second equation and subtract the first.
... 2(x +4y) -(2x -3y) = 2(9) -(7)
...11y = 11 . . . . . simplify
... y = 1 . . . . . . divide by 11
Using the second equation to find x, we have ...
... x + 4·1 = 9
... x = 5 . . . . . subtract 4
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<u>Check</u>
2·5 -3·1 = 10 -3 = 7 . . . . agrees with the first equation
(Since we used the second equation to find x, we know it will check.)
