Answer:
<em>y < 9</em>
Step-by-step explanation:
y - 2 < 7
This is a one-step inequality. You have y - 2 on the left side. You want y alone on the left side. If you add 2 to the left side, you eliminate the -2. You must do the same operation to both sides of an inequality, so add 2 to both sides of the inequality to eliminate the -2 on the left side.
y - 2 + 2 < 7 + 2
y < 9
Answer: y < 9
Answer:
Step-by-step explanation:
1)
Rearrange the expression.
2)
Solve.
3)
Answer:
give an example
Step-by-step explanation:
The equation y= 2x-2 follows the same form as y=mx+b. In y=mx+b, the letter "b" represents the y-intercept. The letter "m" represents the slope.
To solve this try writing the equation underneath y=mx+b:
y=mx+b
y=2x-2
From this we can see, m=2 and b=(-2) (it is negative because 2 is being subtracted rather than added).
Another way to find the y-intercept is pluging in 0 for x into the equation.This is because the y intercept is the y vale on a point where x=0.
y=2x-2
y=2(0)-2
y=0-2
y=-2
Answer: 35% decrease
Step-by-step explanation: In this problem, we're asked to find the percent decrease if the price of an item changes from $180 to $117.
To find the percent decrease, we use the following formula.
The <em>amount of change</em> is the difference between the two numbers which in this case is 180 - 117 and the <em>original number</em> is the first number which is 180.
The difference between 180 and 117 is 63 and we put that over 180.
Now we have .
Now, we either use a calculator or long division. I will use my calculator but if you don't have access to one, long division is always available.
63 ÷ 180 = 0.35
Now since we want to find the percent increase, we need to change 0.35 to a percent and we can do this by moving the decimal point two places to the right.
0.35 ⇒ 35%
So when the price changes from $180 to $117, it is decreased by 35%.