Need help writing equation

Question

Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form.

x intercept of 3 and y intercept of -15

Answer 1

that's the same as the points (3,0) and (0,-15)

line through those two points has slope = (0- -15)/(3-0) = 15/3 = 5

slope = m = the difference in y coordinates divided by the corresponding difference in x coordinates

= "rise over run"

the equation of that line is

y=mx +b where m= slope and b = the y intercept or

y=5x -15