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3 years ago

Write an equation that represents each graph.

Mathematics

2 answers:

Flauer [41]3 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]3 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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Answer the following questions please !

Xelga [282]

Answer:

3. 4

4. 8

5. 24

Step-by-step explanation:

8 0

3 years ago

HELP!!! ASAP!

Feliz [49]

The solution to given system of equations is $(x, y) = (\frac{-15}{263} , \frac{-115}{263})$

The given equation has one solution

Solution:

Given system of equations are:

12x - 13y = 5 --------- eqn 1

x = 23y + 10 --------- eqn 2

We have to solve the system of equations by substitution

Substitute eqn 2 in eqn 1

12(23y + 10) - 13y = 5

276y + 120 - 13y = 5

263y = 5 - 120

263y = -115

$y = \frac{-115}{263}$

Substitute the above value of "y" in eqn 2

$x = 23 \times \frac{-115}{263} + 10\\\\x = \frac{-2645}{263} + 10\\\\x = \frac{-2645 + 2630}{263}\\\\x = \frac{-15}{263}$

Thus the solution to given system of equations is $(x, y) = (\frac{-15}{263} , \frac{-115}{263})$

Thus the given equation has one solution

4 0

3 years ago

Help me please I’ll donate money

Virty [35]

12. It's similar to having an infinite number of solutions because there isn't a specific solution to answer the question.

13. For the equation 0.9x + 5.1x - 7 = 2(2.5x-3), there is only one solution and it is x=1

14. The error that your friend made was that she added extra 16x to the equation. the correct answer is that there is no solution.

16. the equation 6 (x+2)= 5 (x+7) has only one solution. it is x=3.

sorry i wasn't able to answer the other 3,

by the way you don't need to send money, because we are here to help

6 0

3 years ago

A fabric store has 80 3/8 yards of a particular fabric. About how many pairs of curtains could be made from this fabric if each

Keith_Richards [23]

20 because 19 16/33 is the exact answer. Since they ask about how much that can be rounded up to 20

4 0

3 years ago

For the Data Set below, calculate the Variance to the nearest hundredth decimal place. (Do not use a coma in your answer) 175 34

dlinn [17]

Answer:

The variance of the data is 29966.3.

Step-by-step explanation:

The given data set is

175, 349, 234, 512, 638, 549, 500, 611

We need to find the variance to the nearest hundredth decimal place.

Mean of the data

$Mean=\dfrac{\sum x}{n}$

where, n is number of observation.

$Mean=\dfrac{3568}{8}=446$

The mean of the data is 446.

$Variance=\dfrac{\sum (x-mean)^2}{n-1}$

$Variance=\dfrac{(175-446)^2+(349-446)^2+(234-446)^2+(512-446)^2+(638-446)^2+(549-446)^2+(500-446)^2+(611-446)^2}{8-1}$

$Variance=\dfrac{209764}{7}$

$Variance=29966.2857$

$Variance\approx 29966.3$

Therefore, the variance of the data is 29966.3.

4 0

3 years ago