Answer:
see below
Step-by-step explanation:
First find the slope
m= ( y2-y1)/(x2-x1)
= (-5- -7.5)/ ( 2 - -3)
= (-5+7.5) / ( 2+3)
= 2.5 /5
=1/2
Then using the slope intercept equation of a line
y = mx+b where m is the slope and b is the y intercept
y = 1/2x+b
Using a point from above
-5 = 1/2(2) +b
-5 =1+b
Subtract 1 from each side
-6 = b
We have the y intercept
y = 1/2x-6
Tahlia forget to find the y intercept for the equation
y = 0.5x - 6
(-3. -7.5) ; (2 , -5)
m = 0.5 ; (2, -5)
equation of line : y-y1 = m(x-x1}
y -[-5]=0.5(x - 2)
y + 5 = 0.5x - 0.5*2
y + 5 = 0.5x - 1
y = 0.5x - 1 -5
2
10 divide by 5 is 2
speed=d/t=200X2/5=80km/hr
d=sXt=13X80/4=260km
865/110=173/22hr=173X60/22=173X30/11=467min