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2 years ago

Write an equation that represents each graph.

Mathematics

2 answers:

Flauer [41]2 years ago

8 0

9514 1404 393

Answer:

y = -x +3
y = x -3
y = 3x +1
y = -3x -3

Step-by-step explanation:

In each case, the slope can be found by counting the number of vertical grid squares for each horizontal grid square between points where the line crosses grid intersections. The ratio "rise"/"run" is the slope of the line, m.

The y-intercept, b, can be found as the y-value where the line crosses the y-axis.

These values go into the slope-intercept form of the equation for a line to give the equation you want:

y = mx + b

1. Rise is -1 for a run of 1. The y-axis is crossed at 3.

y = -x +3

2. Rise is 1 for a run of 1. The y-axis is crossed at -3.

y = x -3

3. Rise is 3 for a run of 1. The y-axis is crossed at 1.

y = 3x +1

4. Rise is -3 for a run of 1. The y-axis is crossed at -3.

y = -3x -3

Anna71 [15]2 years ago

5 0

Answer:

3x3

Step-by-step explanation:

I think that it is 3x3 because that is the angle.

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mash [69]

Answer: =2084

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3 years ago

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mihalych1998 [28]

Answer:

1100 square inches

Step-by-step explanation:

The faces are all rectangles (area = length x width)

Area of bottom: 20 x 10 = 200

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Area of right side: 10 x 15 = 150

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2 years ago

A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours. To test this claim,

natka813 [3]

Answer: C. 12.5

Step-by-step explanation:

Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.

Population mean : $\mu=4000$

Sample size : n= 100

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Standard deviation: $s=400$

The value of test-statistic is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}\\\\\Rightarrow\ z=\dfrac{4500-4000}{\dfrac{400}{\sqrt{100}}}\\\\\Rightarrow\ z= 12.5$

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3 years ago

Work this out for me

bixtya [17]

Answer:

x = 129

Step-by-step explanation:

x and 51 are same- side exterior angles and supplementary, thus

x = 180 - 51 = 129

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Murrr4er [49]

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