What is the answer for 1 1/2 + ( - 1 / 2) ?

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?