How to solve from only looking at graph
The y-intercept is when x is zero so when x is zero y would be 5. The slope is rise over run so starting from (-2,0) to get to (0,5) we need to go up 5 and over 2. So rise over run 5/2.
answer:y=5/2+5
How to solve with out the graph
use slope formula y2-y1/x2-x1 0-5/-2-0=-5/-2 which equals 5/2 because both of the negatives cancel each other out.
You don't need to solve for the y-intercept because the y-intercept is one of the ordered pairs.