Question 682981
Isolate the y varialbe
7x - 3y + 3y = -42 + 3y
7x = -42 + 3y
7x + 42 = -42 + 3y + 42
7x + 42 = 3y
Divide both sides by 3
y = {{{7/3}}}x + 14 ==> this is the slope-intercept form
...
y intercept, b, is 14
(0, 14)
x intercept is where y = 0
{{{0 = (7/3)x +14}}}
{{{-14 = (7/3)x}}}
{{{-14(3/7) = x}}}
x = -6
(-6,0)
...
{{{graph(300,200,-10,10,-10,16,(7/3)x+14)}}}
.....................
Have more questions? 
Email: HomeworkHelpers@readingboosters.com
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com 
Wanting for others what we want for ourselves.