Write the equation in the form y=mx+b

through (7,11) (2,-1)

slope= (y2 - y1)/(x2 - x1)

= ( -1 -11)/ (2 -7)

= -12/ -5

= 12/5

= 2.4

Equation must be y = 2.4 x + c and we have to find c

Since (7, 11) lies on this line, when x = 7, y = 11

So using (*) 11 = 2.4 * 7 + c

c = 11 - 16.8

c = -5.8

Equation must be y = 2.4 x - 5.8

Multiply by 5 to get rid of decimals

5y = 12 x - 29

5y -12x + 29 = 0

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