Question

Struggling with these, can anyone help me?

Answer 1

Alrighty, so, for the first one the y-intercept is the point on the graph in which the line travels through the y-axis. So the answer is 4 for the first one. For the second one the answer is f(x)=1/2x+3. I recommend Desmos: https://www.desmos.com/calculator It's highly helpful and me and my teachers use it when I do precal.
Hope this helps!