Question 173853
If the lines are parallel it means that they have same slope.  
The basic form of line y=mx+b m is a slope, then y=7x-3 slope m =7
Using "point-slope"  form of the line y-y1=m(x-x1) you can find equation of the line passing through the point (x1,y1)----(8,7)
y-7=7(x-8)
y=7x-49-----answer