Mathematics
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OpenStudy (anonymous):
Choose the equation below that represents the line passing through the point (-2, -3) with a slope of -6.
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OpenStudy (anonymous):
y = -6x - 15
y = -6x - 20
y = -6x + 15
y = -6x + 20
OpenStudy (anonymous):
@Hero
OpenStudy (anonymous):
@ganeshie8
OpenStudy (anonymous):
@hartnn
hartnn (hartnn):
use this equation
\(\Large y-y_1 = m (x-x_1)\)
thats the slope point form
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hartnn (hartnn):
here ,x1, y1 = -2,-3
m = slope = -6
OpenStudy (anonymous):
umm im having trouble ding it im really confused
hartnn (hartnn):
plug in the known values!
y - (-3) = (-6 ) (x- (2))
can you try to simplify that ?
OpenStudy (anonymous):
is the answer d
OpenStudy (anonymous):
y = -6x + 20
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hartnn (hartnn):
nopes,
did you try to simplify ??
what is
y- (-3) = ... ?
OpenStudy (anonymous):
3
hartnn (hartnn):
you mean y+3 ?
OpenStudy (anonymous):
yeah
hartnn (hartnn):
what is x-(-2) = ... ?
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OpenStudy (anonymous):
x+2
hartnn (hartnn):
yes
y + 3 = -6 (x+2)
try to simplify this
OpenStudy (anonymous):
y=-6x-15 ??
hartnn (hartnn):
thats correct! :)
OpenStudy (anonymous):
yayy thank you :))
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hartnn (hartnn):
welcome ^_^
OpenStudy (anonymous):
i have another question can you help me?
OpenStudy (anonymous):
Choose the equation of the horizontal line that passes through the point (1, -5).
OpenStudy (anonymous):
y = -5
x = 1
y = 1
x = -5
OpenStudy (anonymous):
i think its d
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hartnn (hartnn):
horizontal lines have equation of the form
y = c
where c is the y co-ordinate of any point on the line
so, its not D
OpenStudy (anonymous):
so y=-5
hartnn (hartnn):
thats correct :)
OpenStudy (anonymous):
ok thanks again
hartnn (hartnn):
welcome ^_^