-2 is not greater than zero, so, the point don't satisfy the inequality x - y > 0
Hence correct option is false.
Step-by-step explanation:
We need to identify the point (-1,1) satisfies the inequality x - y > 0
Solving:
The value of x = -1 and y =1
Putting values in the inequality:
-2 is not greater than zero, so, the point don't satisfy the inequality x - y > 0
Hence correct option is false.
Keywords: Solving inequalities
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the starting point of the function is 0
Answer: In five months,she will save the same money which is $250.
Step-by-step explanation:
Using the first statement we can generate the function y=10x + 200 and using the second statement we can also generate the function y = 30x + 100 . Now using the two equations solve for x and y to determine how many months they cost the same.
y = 10x + 200
y = 30x + 100
Substitute the value of x in the first equation into the second equation.
30x + 100= 10x + 200 now solve for x
-100 -100
30x = 10x + 100
-10x -10x
20x = 100
x= 5
This means in five months Tina will save the same amount. Now to find out how much the amount is, plot the value of x into one of the equations and solve for y.
y = 10(5) + 200
y = 50 + 200
y = 250
She will save $250 with either option.
