Answer:
Here's how to solve each problem. To find the slope, you use the formula rise/run. Look at the 2 bolded points on the graph. Find the rise/run of those points. That is the slope. The y-intercept is the point where the y-value is directly on the y-axis. This point is already given in each of the graphs. let's work out the first graph (Number 4)
Step-by-step explanation:
First, calculate the run from the point on the y-axis. Move the desired amount of spaces to the left, until you reach the point directly under the point in the 2nd quadrant. The run is -6. Next, rise up the desired amount of spaces to the point that were under. The rise is 3. Remember the formula: rise/run. Divide the rise by the run to get the slope: -0.5 or -1/2. The y-intercept is on the y-axis; it is given for each of the graphs. In this situation, the y-intercept is 3. So, here's how your equation should look:
<em>y = mx + b (y = -0.5x + 3)</em>
<em>R</em>epeat this for each graph, good luck :)
