Question

the equation of the line that has a gradient of 3 and passes through the y-axis at (0,1)

Answer 1

$Gradient =\frac {\Delta Y} {\Delta X}$

$3=\frac {y-1}{x-0}$

$3x=y-1$

Putting the equation in the form y=mx+c

$y=3x+1$