Answer:
Step-by-step explanation:
i don't see the thing you put it just shows the question
yes, if you would to put (-5,2) back into those two equations it would to be true
(-5 being your x)
(2 being your y)
(2)=-2(-5)-8=2, so
2= 10-8=2
2=2=2
The answer is b. hope this helped :)
<u>Corrected Question</u>
I am donating packages for Christmas drive. After the first week, I spent 126 to donate three children packages and 8 adult packages. After two weeks I spent 108 to donate six children packages and 4 adult packages. What is the price of each type of package
Answer:
Adult package costs $12
Child's package costs $10.
Step-by-step explanation:
Let the cost of a child's package =c
Let the cost of an adult package =a
<u>First Purchase</u>
Cost of three children packages and 8 adult package=$126
<u>Second purchase</u>
Cost of six children packages and 4 adult packages=$108
6c+4a=108
Multiply this equation by 2 to make the coefficient of a the same as the other equation
We solve the two resulting equations simultaneously
Subtract
-9c=-90
Divide both sides by -9
c=10
Substitute c=10 into 3c+8a=126 to solve for a
3(10)+8a=126
8a=126-30
8a=96
Divide both sides by 8
a=12
Therefore, an adult package costs $12 while a child's package costs $10.
In the question, they GIVE you the equation for the line:
y = 1.1 x + 1.37 .
When you look at the graph, you notice that the numbers
are actually thousands, so the equation is really
y = (1.1 thousand) x + (1.37 thousand)
or
y = 1,100 x + 1,370 .
The slope of the line is 1,100 .
Choice 'C' says that, because
the slope of any graph = (change in 'y') / (change in 'x') .