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kledi72
06.05.2020 •
Mathematics
Two negative integers are 5 units apart on the number line. Their product is 126. What is the sum of the two integers?
The one solution I need to disregard is___ because I am looking for negative integers. When I disregard that answer I replace it with ___. When I add the two answers together I get ___.
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Ответ:
The slope-intercept form of a line is:
y=mx+b, where m is the slope and b=y-intercept (value of y when x=0)
y=7x-9, slope=7, y-intercept is (0, -9)
y=3x-1, slope=3, y-intercept is (0, -1)
Part B
If a solution exists, the coordinates of each equation are the same, so we can say y=y, which means:
7x-9=3x-1 add 9 to both sides
7x=3x+8 subtract 3x from both sides
4x=8 divide both sides by 4
x=2, now you can use either original equation to solve for the corresponding value of y...
y=3x-1 becomes:
y=3(2)-1
y=6-1
y=5
So the solution to the system of equations is the point (2, 5)