Answer:
8.
m=3
b=-2
y= 3x-2
9.
m=-2/3
b=0
y=-2/3x
Step-by-step explanation:
To find the slope, pick two points on the line and put how much it moves upward over how much it moves to the right. For number 8, the line passes through points (0, -2), and (1, 1). You can see how it moves up 3 units, and 1 unit to the right, so the slope would be 3/1, which simplifies to 3. When a question asks for the y-intercept, it is asking for where the line crosses the y-axis. The y-axis is the line in the middle of each graph pointing up and down. Notice how in number 8, the line crosses the y-axis at -2. This is the y-intercept.
In number 9, the line is going downward, so the slope will be negative. Pick two points, like (0, 0) and (3, -2). To get from the first point to the second point, you would go down 2 units and 3 units to the right. Because of this, the slope will be -2/3. This line crosses the origin, the middle of the graph where x=0 and y=0. Since y=0 when hitting the y-axis, the y-intercept will be 0. Now plug these answers into y=mx+b to find the equation of the line.
lmk if i did anything wrong, hope this helps!!
