Question

Y=5x+9

Answer 1

the 5x is the slope and 9 is the y intercept
it follows the formula: y=mx+b
m=slope
b=y intercept

Answer 2

Your drawing has a negative slope; don't think it represents this line, which has a positive slope.

Answer 3

oops

Answer 4

Not much to look at, but closer than the one above. By substituting x=-1 into the equation, we get (-1,4) as the second point on the line (the intercept of (0,9) is available from the original equation). If I had better graphic skills, I would show the x intercept at (-9/5,0).