Question 585208
find an equation of the line containing the given point and having the given slope 
(-5,0) m=3
*
Standard form of equation for a straight line: y=mx+b, m=slope, b=y-intercept
For given line:
y=3x+b
solving for b using coordinates of given point (-5,0)
0=3*-5+b
b=15
equation: 
y=3x+15