SOLUTION: how do u graph a coordinate plane with an equation??? ex.... y=2x???

Question 26845: how do u graph a coordinate plane with an equation??? ex.... y=2x???
Found 2 solutions by piglet162431, heart_breaker911:
Answer by piglet162431(90) (Show Source): You can put this solution on YOUR website!
To find the percentage of a discount this could be used to solve it.
If aN item was 25 before, and is 20 now, what's the rate of discount?
so we know that 25-20=5. So that's the discount. 5/25 was deducted from the saling prize. 5/25=1/5 =20%.
Percent of Change.
From 1000-115. First, you ahve to decide whether it's a percent of increase or decrease. (In this case, going from a bigger number to smaller number is decrease). You take the whatever bigger number, and subtract it by the smaller number. (1000-115= 885)
Now you put this number on the numerator of the ratio, and the first (FIRST) number to the denominator.

It had changed 88.5%.
Selling Prize.
If you know the original and discount, you'll know the sellign prize. Let say a 60 dollar jack for 16% off.
You multiply to these two numbers to find the amount of discount. 16 % of 60 is .16X60 which is 9.6, so 9.6 dollars will be taken off from the 60 dollar.
60-9.6= 50.4. Selling prize is $50.40
Answer by heart_breaker911(1) (Show Source): You can put this solution on YOUR website!
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