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Scorpion4ik [409]
3 years ago
12

my hw write find an equation of the line passing through (-2,3) and (4,-5) I have to write the equation in slope-intercept form

I need help
Mathematics
1 answer:
Viefleur [7K]3 years ago
3 0

Answer:

The line passing through the given points is:

y=-\frac{4}{3}x+\frac{1}{3}

in its slope-intercept form

Step-by-step explanation:

Start by finding the slope of the segment that joins the two given points using the slope formula:

slope=\frac{y_2-y_1}{x_2-x_1}

which for our case renders:

slope=\frac{3-(-5)}{-2-4}=\frac{8}{-6} =-\frac{4}{3}

Now we can find the y-intercept by using any one of the given points in the general slope-intercept form of a line with this slope:

y=-\frac{4}{3} x+b\\3=-\frac{4}{3} (-2)+b\\3=\frac{8}{3}+b\\b=3-\frac{8}{3} \\b=\frac{9-8}{3} \\b=\frac{1}{3}

Therefore, the equation of the line becomes:

y=-\frac{4}{3}x+\frac{1}{3}

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Answer:

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General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
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Step-by-step explanation:

<u>Step 1: Define equation</u>

-4 - (z - 6) = 12

<u>Step 2: Solve for </u><em><u>z</u></em>

  1. Distribute negative:                              -4 - z + 6 = 12
  2. Combine like terms:                             -z + 2 = 12
  3. Subtract 2 on both sides:                    -z = 10
  4. Divide -1 on both sides:                        z = -10

<u>Step 3: Check</u>

<em>Plug in z to verify it's a solution.</em>

  1. Substitute:                    -4 - (-10 - 6) = 12
  2. Subtract:                       -4 - (-16) = 12
  3. Simplify:                        -4 + 16 = 12
  4. Add:                               12 = 12

Here we see that 12 does indeed equal 12.

∴ z = -10 is a solution of the equation.

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