Seudónimo Seudónimo
  • 01-05-2017
  • Mathematics
contestada

What is the equation of a line that goes through (2,5) and (-2,3)?

Respuesta :

mathnstuff
mathnstuff mathnstuff
  • 01-05-2017
First, we need to find the slope.
m = [tex] \frac{ x_{2} - x_{1} }{ y_{2} - y_{1} } [/tex]
m = [tex] \frac{2-(-2)}{3-5} [/tex]
m = [tex] \frac{4}{-2} [/tex]
m = -2

Next, write the standard line equation:
y = mx + b
Now fill in what you know (pick a coordinate point, it does not matter):
5 = -2(2) + b
Simplify to solve for b:
5 = -4 + b
+4  +4
9 = b

Rewrite the equation:
y = -2x + 9
Answer Link

Otras preguntas

How to solve 3y-2x+3=0?
You notice that you are getting out of breath, your heart is beating quickly, and you are sweating. Using what you know about the respiratory system and homeost
the linear equation of the line in slope-intercept form
What is the mean of these numbers: 120, 118, 120, 136, 121?
this is due today pls help pls
12. Classification can increase your ______of how things may be related to one another. what goes In the blank ?​
suppose y varies directly as x. if x=7 when y=21, find x when y=30
what is y-10=9(x+8)written in standard form?
Simplified result 7m-(3+5m)
cell communication, also called cell ____, involves both incoming and outgoing signals.