Answer:
f(x) = -2x
Step-by-step explanation:
Direct variation equation is y= kx, or f(x)=kx
f(x)= -12, x=6
f(x)=kx
-12 = k*6
k= - 2
f(x) = -2x
Look at the picture below
Answer:
the forth
Step-by-step explanation:
you know that hipotenusa is the longest side in a rectangle triangle and its formula is H=![\sqrt{l1^2+l2^2}](https://tex.z-dn.net/?f=%5Csqrt%7Bl1%5E2%2Bl2%5E2%7D)
for each group of number you apply the formula you will see that 13 and 84 do not have 85 as hipotenusa