# What is the y-intercept of the line y=4x+3?

This line intercepts $y$ axis in point $\left(0 , 3\right)$
To calculate y-intercept of a function you just have to substitute $0$ for $x$ in the formula of the function.
$y = 4 \cdot 0 + 3 = 0 + 3 = 3$