In this case the two equations<span> describe lines that intersect at one particular point. Clearly this point is on both lines, and therefore its coordinates (x, y) will satisfy the </span>equation<span> of either line. Thus the pair (x, y) is the one and only </span>solution to the system of equations<span>.</span>
-3x<9. The way to figure this out is to divide by -3 to get x by itself. Remember, when dividing by a negative, you need to flip the inequality sign.
x>-3 is your answer.
I hope this helps!
Answer:
Step-by-step explanation:
a) Number of families having income between $ 20000 - $ 40000 = 100
b) Number of families having income less than $40000 = 100 + 40 = 140
Answer:
x = 1
y = -4
Step-by-step explanation:
y = -x - 3
y + 3 = -x
x = - y - 3
y = -7(-y - 3) + 3
y = 7y + 21 + 3
y = 7y + 24
-6y = 24
y = -4
-4 = -x - 3
-1 = -x
x = 1
