nayellisoto15
17.10.2019 •
Mathematics
What values of x and y satisfy −133x−2y=7 and 3x+25y=5 simultaneously?
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Ответ:
2) 3x + 25 y = 5
Multiply 1) by 25 and 2) by 2, then
1a) - 3325x - 50y = 175
2a) 6x + 50y = 10
Add the 1a) and 2a)
3) -3319x = 185
x = - 185 / 3319 = -0.056
from 1) y = (-133(x) -7) /(2) = [-133(-185/3319) -7]/2 =0.207
Ответ:
the complete question in the attached figure
the points are
(3,183) (5,305)
to find the equation of the > y-y1=m(x-x1) (point-slope)m=(y2-y1)/(x2-> m=(305-183)/(5-3)=122/2=61
y-y1=m(x- > y-183=61*(x-3)
then
the answer is y-183=61*(x-3)