Answer:
Step-by-step explanation:
6.
if the slope is 8 , y-intercept is 2
use the general equation for slope intercept y= mx+b where m is slope and b is y-intercept
y= 8x +2
7.
slope is 0, y- intercept is -3
y= 0*x -3 the equation is y= -3
8. (same steps for 9)
slope is 5, and (2,7) on the line
use the point slope equation (y-y1) = m( x-x1)
y-7 = 5 (x-2)
now transform it into the slope intercept form y= mx+b
y = 5x - 10 + 7; y = 5x -3
5.
between the points (0, -2) and ( 2, 0 ) the slope is m = (y2-y1)/(x2-x1) =(-2-0)/(0-2) = 1, and the y-intercept is -2
y= 1*x -2 ; y=x-2
13.
a. y= 18x +10 because the distance y is 18 for each x hour plus the extra 10 miles that she had at the start
b. the y-intercept is where the graph intersects the y-axis so is 10 and represents the starting point at 10 miles , and the slope is 18 and represents how fast is moving
c. after 2 hours means x=2
y= 18*2 +10 = 36+10 = 46 miles
