Verified Answer :

Ckaranja

At y intercept, the co-ordinates are;
(0, -3) and the second point is (3,0)
Gradient, m= \(\frac{change in y}{change in x}\)
m=\(\frac{0--3}{3-0}\)
m=\(\frac{3}{3}\)
m=1
y=x+c
Replacing for x and y using point (3, 0);
0=3+c
c=-3
y=x-3

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