Suppose you are given the yields on the following Treasury securities$.$ For simplicity, assume that there is no maturity risk premium.

Security

Yield

$($Percent$)$

$1$year $4\mathrm{.}90$

$2$year $6\mathrm{.}10$

$3$year $7\mathrm{.}60$

$4$year $8\mathrm{.}90$

If you want to forecast the yield on a $1$year security in one year from now, you need to build the following equation:

$=.$ And the yield on $1$year security in one year would be $.$

If you want to forecast the yield on a $1$year security two years from now, you need to build the following equation:

$=.$ And the yield on $1$year security in two years would be $.$

If you want to forecast the yield on a $2$year security one year from now, you need to build the following equation:

$=.$ And the yield on $2$year security in one year would be $.$

If you want to forecast the yield on a $3$year security one year from now, you need to build the following equation:

$=.$ And the yield on $3$year security in one year would be $.$