Question

If y=kx+2k,where is a constant,and if y= -14when x=5,what is the value of x when y = -24?

Answer 1

Answer:

Substitute the first values of y and x, we get,

-14 = k(5) +2k

-14 = 5k + 2k

-14 = 7k

k = -14/7

k = -2

Now use this value of k in the second part,

-24 = -2(x) + 2(-2)

-24 = -2x - 4

-20 = -2x

x = -20/-2

x = 10

Hope this helps...

Answer 2

Answer:

y=kx+2k

-14=k(5)+2k

-14=5k+2k

-14=7k

-14/7=k

-2=k

put k in y=kx+2k

-24=(-2)x+2(-2)

-24=-2x-4

-24+4=2x

-20=2x

-20/2=x

-10=x