Joeycrumbs Joeycrumbs
  • 10-02-2022
  • Mathematics
contestada

Find the equation of line that goes through coordinates (-4,-2) and (-3,-5) ?

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maryannewashere
maryannewashere maryannewashere
  • 10-02-2022

Answer: y = -3x/7 + 26/7

Step-by-step explanation: Using the "slope-intercept" format, we can set up 2 equations, using the given points.

The format:  y = mx + b, where m is the slope and b is the y-intercept (where x = 0)

To find m and b, we need 2 equations which we get using the 2 given points:

(-3,5):

5 = m(-3) + b  (equation 1)

(4,2):

2 = m(4) + b   (equation 2)

Subtract #2 from #1 to get:

3 = -7m

m = -3/7

Then, using equation 1, find b:

5 = (-3/7)*(-3) + b

b = 5 - 9/7 = 26/7

The equation is then:

y = -3x/7 + 26/7

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