If f(x)=4x+12 is graphed on a coordinate plane, what is the y-intercept of the graph? 4 8 12 16

To find the y-intercept of the graph of the function $f(x)=4x+12$, we need to determine the value of $f(x)$ when $x=0$.<br /><br />Substituting $x=0$ into the equation, we get:<br />$f(0)=4(0)+12=12$<br /><br />Therefore, the y-intercept of the graph is 12.<br /><br />Answer: 12