sbuck98
  • sbuck98
Can someone help me get the answer and show how they got it?
Geometry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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sbuck98
  • sbuck98
@Nnesha do you know any of this stuff?
sbuck98
  • sbuck98
@paki @Luigi0210 @lynzandriptide @isry98

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More answers

Nnesha
  • Nnesha
y=mx+b is slope intercept form where `m` is slope and `b` is y-intercept
sbuck98
  • sbuck98
How'd you get it though?
Nnesha
  • Nnesha
i didn't get anything it's the original equation for slope intercept form
sbuck98
  • sbuck98
OH sorry! Could you help me solve ABCD for that problem? and explain how you got the answers
Nnesha
  • Nnesha
y=mx+b is slope intercept parallel lines should have the same slope example if the slope of line `a` is 2 then slope of line `b` would be 2 as wll slope of perpendicular lines are `negative reciprocal` if slope of line a is a/b then slope of `b` would be -b/a
sbuck98
  • sbuck98
okay!
Nnesha
  • Nnesha
so what's the slope of line J ??
sbuck98
  • sbuck98
Y=-4+2x?
Nnesha
  • Nnesha
just slope
Nnesha
  • Nnesha
like i said y=mx+b m is slope which is always with x variable
sbuck98
  • sbuck98
so 2?
Nnesha
  • Nnesha
yes right
Nnesha
  • Nnesha
now we need equation of the line that's parallel to y=2x+4 slope of new line would be what ? parallel lines would have the same slope
sbuck98
  • sbuck98
so it's the same?
Nnesha
  • Nnesha
yes right
sbuck98
  • sbuck98
SO that would be by anwser for A?
Nnesha
  • Nnesha
yes what about B ?
sbuck98
  • sbuck98
The same because anything that's parallell is the same
Nnesha
  • Nnesha
yes right!
sbuck98
  • sbuck98
OK:)))
Nnesha
  • Nnesha
so part C) find the equation m=2 we already know that so y =mx+b use the order pair they gave u for x and y values and replace m with 2 to find b
Nnesha
  • Nnesha
\[\huge\rm y=2x+b\] passes through (3,7) so replace (x,y) with (3,7) and solve for b
sbuck98
  • sbuck98
7+2*3+b?
Nnesha
  • Nnesha
if you mean 7 `=` 2(3)+b then yes now solve for b
sbuck98
  • sbuck98
1?
Nnesha
  • Nnesha
yes right so b=1 now you can replace b with one in the original equation
sbuck98
  • sbuck98
7=2(3)+1
Nnesha
  • Nnesha
well we need in slope intercept form so keep the x and y variables y=2x+1
sbuck98
  • sbuck98
thank you
Nnesha
  • Nnesha
last part if the we need line that's perpendicular to line j y=2x+4 like i said perpendicular slopes are negative reciprocal so what would be the slope of line h ?
Nnesha
  • Nnesha
i've to go will be back
sbuck98
  • sbuck98
y=-4+2x
sbuck98
  • sbuck98
ok how long?
Nnesha
  • Nnesha
oh well got few mints
sbuck98
  • sbuck98
oh good!
Nnesha
  • Nnesha
alright here is ane example if slope of the first line is a/b then perpendicular slope would be `-b/a` <--flipped the fraction and changed the sign
Nnesha
  • Nnesha
so what's the perpendicular slope for line h ?
sbuck98
  • sbuck98
So I had it right?
Nnesha
  • Nnesha
no
sbuck98
  • sbuck98
-4+2x=y
Nnesha
  • Nnesha
i said slope would negative reciprocal but the slope of the equation u posted is the same like J=2x+4
Nnesha
  • Nnesha
remember : parallel lines `same slope ` perpendicular slopes `negative reciprocal`
sbuck98
  • sbuck98
ok
Nnesha
  • Nnesha
what's the slope of line j ?
sbuck98
  • sbuck98
-4+2x=j
Nnesha
  • Nnesha
why are u keep posting that equation ? j=2x `+` 4
sbuck98
  • sbuck98
ok
Nnesha
  • Nnesha
what's the `slope`( not the equation) of line J ?
sbuck98
  • sbuck98
2
Nnesha
  • Nnesha
yes right so slope of line h would be negative reciprocal of 2
sbuck98
  • sbuck98
you prob think im stupid but are we on C or D?
Nnesha
  • Nnesha
for which part they are asking `perpendicular ` equation ? :=)
sbuck98
  • sbuck98
D:)
Nnesha
  • Nnesha
yes so ofc D
Nnesha
  • Nnesha
here is an example if slope of first equation is a/b then slope of perpendicular equation would be -b/a so if the slope of line J is 2 then slope of line h would be what ?
sbuck98
  • sbuck98
-2
Nnesha
  • Nnesha
what's the reciprocal of 2 ? it's same as 2/1
sbuck98
  • sbuck98
1/2
sbuck98
  • sbuck98
or 1
Nnesha
  • Nnesha
no 1/2 is right so it would be -1/2
sbuck98
  • sbuck98
ok
Nnesha
  • Nnesha
now replace m with -1/2 and substitute (x,y) for given order to find b
sbuck98
  • sbuck98
help
Nnesha
  • Nnesha
what's the original equation of slope intercept ?
Nnesha
  • Nnesha
for **
sbuck98
  • sbuck98
j=2x=4
sbuck98
  • sbuck98
+4
Nnesha
  • Nnesha
you really like that equation y=mx+ b is the original equation replace m with -1/2 and then (x,y) with the given point in part D
sbuck98
  • sbuck98
-1/2+8+10
Nnesha
  • Nnesha
hmm y=mx+b y value should at left side
Nnesha
  • Nnesha
just like u did for part C
sbuck98
  • sbuck98
10=-1/2(8)
Nnesha
  • Nnesha
yes right solve for b 10=-1/2(8)+b
Nnesha
  • Nnesha
gtg
sbuck98
  • sbuck98
ok
sbuck98
  • sbuck98
b=21/2=10.500
Nnesha
  • Nnesha
hmm no \[10=-\frac{ 1 }{ 2 }(8)+b\] you can divide 8/2
Nnesha
  • Nnesha
it shouldn't be decimal

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