A. slope is rise/run. can count up 3 right 2. slope = 3/2
also by slope formula m = (y - y1)/(x - x1)
B. y-intercept is the y coordinate where the line crosses the y-axis.
See that it is at y = -4 on the graph?
To use the slope.. go backwards from the closest point (4,2) down 2 left 3 gets you to the next point (2,-1) then go down 2 left 3 again to get to y-intercept (0, -4)
C. y = (3/2)x - 4
How you get it is by putting in the values into the standard equation for a line; y = mx + b
m is slope and b is y-intercept.
Step-by-step explanation:
2(20-4a)=6-a
40-8a=6-a
-8a+a=6-40
-7a=-34
-7a/-7=-34/-7
a=34/7 or 4.9
Answer:
7, 4
Step-by-step explanation:
Turn the page around so we can answer
Answer:
y = -x -3
Step-by-step explanation:
The slope intercept form is
y = mx+b where m is the slope and b is the y intercept
3x+3y = -9
Subtract 3x from each side
3x-3x+3y = -3x-9
3y = -3x-9
Divide each side by 3
3y/3 = -3x/3 -9/3
y = -x -3