Hello! Slope is rise/run. The formula for finding slope is y2 - y1 / x2 - x1. This means you subtract the first x and y-coordinates from the second x and y-coordinates. The line is going down, so the slope will be negative. Just by looking at the answer choices, A and D are eliminated, because those slopes are positive and we are looking for negative slope. Let's look for two points. The two points we wil use are (0, 4) and (1, 1). Here are the numbers that will represent each value.
y2: 1
y1: 4
x2: 1
x1: 0
Let's solve. 1 - 4 is -3. 1 - 0 is 1. -3/1 is -3. There. The slope is -3. The answer choice you picked is correct. The answer is C: -3.