Thank you for the opportunity to help you with your question!
First find the gradient =dy/dx
=4 -(-4)/1 -(-7)
8/8 = 1
gradient = 1
To find the equation, take (x,y) as one coordinate and the second coordinate can be either of the two given
So the coordinates are (x,y) , (1 ,4)
the equation must be in the form of y=x +c
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