Why do you want to do math problems in grade two? B how did you get it? Given where the coordinate k is, how to find the formula? Be specific, thank you.
Substitute (0, 1) into y=kx+b, that is, the first number in the coordinate is x and the last number is y.
That is1= 0x+b.
So b= 1.
Then substitute (3, -3) to get -3=3k+ 1.
k=-4/3
So y=-4/3x+ 1.