Write the equation of the line through the given points (3, 5) and (-3,-3) in the three different forms. Point-Slope Form
Slope-Intercept Form
Standard Form

y-5=1/3(x-3)

y=1/3x+4

no standard form

Step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.