Consider the following equations: −x − y = 1

y = x + 3

If the two equations are graphed, at what point do the lines representing the two equations intersect?

a

(−1, 2)

b

(−2, 1)

c

(1, −2)

d

(2, −1)

The Answer is: (-2,1)

Step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.