(3,6). 3 units from point. 6 units from y axis.
15 because simple division 30 divided by 2 is 15 only 15 can happen
I’m not 100% sure but I think it’s y=5x+20
Y=7 because there is no slope and the Y intercept is at 7.
Since the number is a fraction make a number line using fractions. The inequality sign includes being equal to, so add a solid dot on -5/2 and since x is less than that, draw an arrow pointing to the left.
See attached drawing.
For interval notation since x can be any number less than or equal to -5/2 it would be written as (-∞, -5/2]