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Answer:
equation= y-y¹=m(x-x¹)
where m = gradient or slope
slope= y²-y¹
x²-x¹
= 4--7
-1--3
= 4+7
-1+3
= 11
2
= 5.5
equation= y-4=5.5(x--1)
= y-4=5.5(x+1)
y-4= 5.5x+5.5
y= 5.5x+5.5+4
y= 5.5x+9.5