PLEASE HELP!!! Find the equation of this line. All three answers please!!!

Answer:
[tex]y=-\frac{3}{4}x+3[/tex]
Step-by-step explanation:
formula for the gradient is [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1}}[/tex]
we insert our intercepts to get [tex]\frac{0-3}{4-0}=\frac{-3}{4}[/tex]
and our y-intercept (where the line crosses the y-axis) is 3