rb3910
21.10.2020 •
Mathematics
Writing equations of lines
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Ответ:
Step-by-step explanation:
Equation of straight line is y=mx+c
choose any two points on straight line
for me I choose:(-3,11) and (3,-1)
use these two points to find gradient,m.
m= (-1-11)/(3-(-3))
m= -2
now, y=-2x+c
choose any point on the straight line
I choose point (3,-1)
sub the point into the equation to find c
-1=-2(3)+c
c=5
equation: y=-2x+5
Ответ:
-2
Step-by-step explanation:
Because the x is being multiplied by 2 you would do the same for the y and multiply it by 2 to get -2