Can anyone help me with this math stuff? I will give you 15 points please help me

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?

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?