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quiyansimmons15
26.02.2021 •
Mathematics
HELPPPPPP I SUCK AT MATH
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Ответ:
same
Step-by-step explanation:
Ответ:
c
Step-by-step explanation:
Ответ:
We know that two lines are parallel if they have the same slope.
Using this, we will find that the line parallel to the one graphed and that passes through (4, 1) is: y = -2*x + 9
----------------------------------------
Let's see how we can find the line:
To find the line, the first thing we need to do is find the slope of the graphed line.
Remember that a general line is something like:
y = a*x + b
Where a is the slope and b is the y-intercept.
If we do know that the line passes through the points (x₁, y₁) and (x₂, y₂) then the slope of that line can be written as:
Here we can see that the graphed line passes through (-3, 3) and (-2, 1). Then the slope will be:
Then the slope of the parallel line is also -2, so the parallel line will be something like:
y = -2*x + c
To find the value of c, we use the fact that this line passes through (4, 1).
So when x = 4, we must have y = 1.
Repacing these in the line equation we get:
1 = -2*4 + c
1 = -8 + c
1 + 8 = c = 9
Then the parallel line to the graphed one that passes through (4, 1) is:
y = -2*x + 9
If you want to learn more, you can read:
link