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for the first you answered correctly
for second you answered incorectly a little: look perpendicular line have NEGATIVE reciprocal slopes in your answer the lines have just reciprocal slopes
so would the answer be C?
what do you think for third?
ok so for third 1st rewite the equation in slope-intercept form: 2x+6y=-4 in slope intercept it would be y=-1/3x - 2/3
now we have this equation: y=-1/3x - 2/3 y=-1/3x+b substitute the coordinates: -3=1/3*3+b b=-3-1=-4 so the equation is y=-1/3x-4 now rewite this in standart form and get your answer
ok give me a second
Wenn Sie mir bei etwas helfen , das wirklich machen würde mein Tag !|dw:1443861916216:dw|
wait i seems to make a mistake
i got 3y+x=12
Entschuldigen Sie , aber könnten Sie mir helfen? @ AlexandervonHumboldt2
yeah i sems to make a mistake let me redo
it should have been 3y+x=-6
ok lets move to fourth question
so thats the final answer
so for the fourth question the slope formula is (y1-y2)/(x1-x2)=(-6+12)/(-3+1)=6/(-2)=???
1/3 instead of -1/3
does that make sense?
yes and would this http://prntscr.com/8n6u56 be done the same way?
yes first count the slope using slope formula i gave you then the slope of the line parallel to the given line would be the same. dont forget that in this question they need slope of parallel line. it would be the same as the slope you will count of line A
so look: (y1-y2)/(x1-x2)=(2-6)/(1-3)=(-4)/(-2)=4/2=2 the slope of line A is 2 thus the slope of parallel line is.............
it would be -2 or 2
slopes of parallel line are equal: as the slope of line A is 2 then it would be 2
ok ty sooooooo much for helping