Question 392668
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Hi
Using the point-slope formula, {{{m =(y[2] - y[1])/(x[2] - x[1])}}}
(3,4)and
(4,7)    m = 4-7 /3-4  = -3/-1 = 3
m = 3
 the standard slope-intercept form for an equation of a line y = mx + b  
where m is the slope and b the y-intercept.  
y = 3x + b   |using ordered pair Pt(3,4) to solve for b
4 = 3*3 + b
-5 = b
y = 3x - 5
Standard form
 3x-y = 5