If x orignial price than 60/100*x=80/100*(x-40) and selling price =60/100*x=96
Answer:
-54
Step-by-step explanation:
Substitute the numbers for the variables.
-(5)+7(-7)
=-5-49
=-54
Answer:
I think the answer is 12.5
A straight line passing through the point (-2,1) and having a gradient of -3 yields the equation y = -3x - 5.
We know that a straight line is an infinitely long line with no curves on it. A straight line's equation is
y = mx + c...(1), where m is the gradient of the straight line and c is a constant.
Given that the gradient of the given straight line = m = -3.
Putting this value in (1), we get
y = -3x + c ...(2)
Again, the given straight line passes through the point (-2,1). So, we can put x = -2 and y = 1 to get the value of the constant c.
So, 1 = (-3)(-2) + c
i.e. 6 + c = 1
i.e. c = 1 - 6 = -5
(2) can be written as
y = -3x - 5
Therefore the equation of the given straight line is
y = -3x - 5
Know more about straight lines here -
brainly.com/question/8085796
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