Answer:
a) x = -1 and y = -10
Step-by-step explanation:
The first part says find the value of y when the value of x is -3. Then the second part of the question is to find the value of x when the value of y is 2.
so lets solve part a)
So answer to part a is x = -1 and y = -10
similarly try the other parts.
Answer:
20% reduction
Step-by-step explanation:
Given
Required
Price reduction in Jane's idea
First, calculate the new weight of the box (the original plan)
Express 1 as percentage
So, the original idea is:
i.e. 200g costs 3 pounds each
Calculate unit price
pound per gram
For Jane's idea, the price of each box will be:
pound
The percentage reduction is then calculated as:
We can use the points (4, 5) and (8, 10) to solve.
Slope formula: y2-y1/x2-x1
= 10-5/8-4
= 5/4
= 1.25
The answer is [ D. The slope of the graph is 1.25 ]
Best of Luck!
90 degrees hope this helps :)