The equation of a straight line is given by y=mx+c where m is the slope while c is the y-intercept. The formula for obtaining the slope is given by:
m=(y-y1)/(x-x1)
therefore the formula for our graph will be:
3=(y-5)/(x-2)
3(x-2)=y-5
y-5=3x-6
y=3x-6+5
y=3x-1
the answer is y=3x-1
