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Gnesinka [82]
3 years ago
8

Which of the following could be the graph of the line y = -3x + 2?

Mathematics
2 answers:
loris [4]3 years ago
7 0
There are no choices given in the question. It would be helpful if you understand how to graph the equation then from their you will know the answer. To graph a line, you need to determine the y-intercept and the slope. The y-intercept is where the line intersects to the y-axis which is 2 in this case. The slope is the rise over run which is -3 since it is negative it should be sloping to the left.
Bezzdna [24]3 years ago
3 0

Answer:

Step-by-step explanation:

y = -3x + 2 is  a linear equation, whose graph looks like a line .

To find the graph of this equation we can find two points on it ,mark them on a graph paper and join to get the graph of line .

For points we can use random value of x

for x= 0

y = -3(0)+2=2

so point is (0,2)

for x=1

y = -3(1)+2

y= -1

Point is (1,-1)

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A signalized intersection has a cycle length of 60 seconds and an effective red time of 25 seconds. The effective green time is
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What is the equation of a line that is parallel to the line 2x + 5y = 10 and passes through the point (-5, 1)? Check all
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Answer:

B, E

Step-by-step explanation:

The equation of that line in slope intercept form is y = -2/5x + 2

The slope of a line parallel to that line will be the same as its slope, so -2/5.

To find the y-intercept of a line that passes through the point (-5, 1) with that slope, you will have to plug in the x and y values of that point into what you know of the equation of the line.

y = -2/5x + b

1 = -2/5(-5) + b

1 = 2 + b

-1 = b

From this, you can construct an equation.

y = -2/5x - 1

However, this is not an answer choice.  

It cannot be A because this line does not have a slope of -1.

2x + 5y = 15

5y = -2x - 5

y = -2/5x - 1

It can be B because this line is the same as the equation we came up with.

It cannot be C because this line does not have a slope of -1 or a y-intercept of -3.

2x + 5y = -15

5y = -2x - 15

y = -2/5x - 3

It cannot be D because this line does not have a y-intercept of -3.

y - 1 = -2/5(x + 5)

y - 1 = -2/5x - 2

y = -2/5x - 1

It can be E because this equation matches the one we came up with.

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3 years ago
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