How do i make a formula for a line if they only give me the intercept and the slope

Well what you want is y = mx + b
m = slope
b = intercept for y
with that just substitute in the slope and the intercept, but leave the x and y as it is. So later on you can put in a x coordinate and get the y coordinate through that, hope this helps!

They sought new allies to germany tried to get mexico to join and put pressure on the us. the us joined the allies because of the lucitania