Solve for x
(-3x+x)=kx+9

Step-by-step explanation:

(-3x+x)=kx+9

-2x=kx+9

-2x-kx=9

x(-2-k)=9

x=9/(-2-k)

x =-9/k+2

Step-by-step explanation:

-3x + x =kx +9

-2x=kx +9

-9=kx +2x

-9=x(k+2)

-9/k +2  = x

therefore, x= -9/k +2

40 minutes

step-by-step explanation:

add the time and multiply by 2

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?