Write an equation of direct variation that includes the point (9,-12)

Since it must include the point (9,-12) we know that if we substitute x=9 and y=-12 into y = kx we will have a true equation, so we do that: y = k·x -12 = k·9 -12 = 9k We divide both sides by 9 to solve for k: = = k So the constant k is , and so we substitute that for k in y = k·x and get the y = x  

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Y= -4/3x
Hope this helps

step-by-step explanation:

when the line is solid:

it's either < or >

when the line is dashed:

it's either < or >

this > inequality sign means:

greater thanmore thanaboveexceeds

this < inequality sign means:

less thanfewer thanbelow

this > inequality sign means:

greater than/equal tono less thanat leastminimum of

this < inequality sign means:

less than/equal tono more thanat mostmaximum of

about the problem:

since the line is solid, that means it's either < or >

srry i'm not done ! i'll