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Rzqust [24]
3 years ago
14

Please help me I suck at math ​

Mathematics
2 answers:
Firlakuza [10]3 years ago
7 0

Answer:

1

Step-by-step explanation:

To find the slope of a line, you need to find how much it rises for a certain amount of run. Here, the line rises from -3 to 1, which is a rise of 4, while "running" from -1 to 3, or a run of 4. 4/4=1. Hope this helps!

erma4kov [3.2K]3 years ago
4 0

Answer:

Slope (m) =

ΔY

ΔX

=

1

1

= 1

θ =

arctan( ΔY )

ΔX

= 45° =

1

4

π

ΔX = 3 – -1 = 4

ΔY = 1 – -3 = 4

Distance (d) = √ΔX2 + ΔY2 = √32 = 5.6568542494924

Equation of the line:

y = x – 2

When x=0, y = -2

When y=0, x = 2

Step-by-step explanationSlope (m) =

ΔY

ΔX

=

1

1

= 1

θ =

arctan( ΔY )

ΔX

= 45° =

1

4

π

ΔX = 3 – -1 = 4

ΔY = 1 – -3 = 4

Distance (d) = √ΔX2 + ΔY2 = √32 = 5.6568542494924

Equation of the line:

y = x – 2

give me branliest please

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Answer:

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General Formulas and Concepts:

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<u>Algebra I</u>

Slope Formula: \displaystyle m=\frac{y_2-y_1}{x_2-x_1}

Slope-Intercept Form: y = mx + b

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Linear Regression

Step-by-step explanation:

We can draw any best line of fit, as long as it is <em>reasonable</em> around the points that are given.

We can just take 2 points and use slope formula and Slope-Intercept Form to find the equation for the best line of fit.

Using Linear Regression, we can determine the <em>true</em> best line of fit using graphing utilities.

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Point (21600, 205)

Point (27000, 290)

<em>Find slope m</em>

  1. Substitute in point [SF]:                    \displaystyle m=\frac{290-205}{27000-21600}
  2. [Fraction] Subtract:                           \displaystyle m=\frac{85}{5400}
  3. [Fraction] Simplify:                            \displaystyle m=\frac{17}{1080}

<em>Find equation</em>

  1. Define equation [SIF]:                        \displaystyle y = \frac{17}{1080}x + b
  2. Substitute in point:                            \displaystyle 290 = \frac{17}{1080}(27000) + b
  3. Multiply:                                             \displaystyle 290 = 425 + b
  4. Isolate y-intercept <em>b</em>:                         \displaystyle -135 = b
  5. Rewrite:                                             \displaystyle b = -135
  6. Redefine equation:                           \displaystyle y = \frac{17}{1080}x - 135

Slope-Intercept Form tells us that our slope <em>m</em> = \displaystyle \frac{17}{1080} and our y-intercept \displaystyle b = -135.

Setting this as function f(x), we can see from the graph that it is extremely accurate (Blue line).

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Depending on the graphing calc you have, the steps may be different.

Using a graphing calc, we can use statistics and determine the <em>best</em> best line of fit.

When we determine the values, we should see that our equation would be g(x) (Green Line).

<em>Credit to Lauren for collabing w/ me in graphing.</em>

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