Take the x-axis and y-axis and locate the point on the graph. if it is exactly on the line it is a solution. Alternatively you could take the equation in the form of y=mx+b or ay+bx=c and replace the variables with the actual numbers and see if the equation makes sense
S=d/t ⇒d=s*t
s=speed
d=distance
t=time
The first train :
d=x
x=70 miles/h*t ⇒ x=70t (1)
The second train
d=360 miles - x
360 miles - x=80 miles/h*t ⇒360-x=80t ⇒ x=360-80t (2)
therefore, with the equations (1) and (2) we have a systeme of equations:
x=70t
x=360-80t
we can solve this system of equations by equalization method.
70t=360-80t
70t+80t=360
150t=360
t=360/150=2.4 (≈2 hour 24 minutes)
Answer: the first train meet with the second train in 2 hour 24 minutes.
Answer:
Step-by-step explanation:
ceanter
Answer:
(1,2)
Step-by-step explanation:
x value -2+4 /2 = 1
y value -2+6/2 = 2
Answer:
Step-by-step explanation:
a) substitute t = 1 in the expression
3 - 2t = 3- 2*1
= 3 - 2
= 1
b) substitute t = 4 in the expression
3 - 2t = 3 - 2*4
= 3 - 8
= (-5)