How do you bet -1?

[dynacraze]

I betted RL -1.5 with Texas and lost b/c of it. I know there was a way to do it like you bet both moneyline and runline and you get a number. For instance if you bet on yankees today moneyline it would be -170 but if you bet yankees RL it would be -115 or so. How do you do Yankees -1? I know that line will be somewhere around -140. If that line is -140, how would i risk 140 to win 100? Thanks.