Answer:
A. 2x-4
Step-by-step explanation:
Let his brother's age be .
Derrick is 4 years younger than twice his brother's age. Which means derrick is 4 years younger than .
Which makes derricks age since he is 4 years younger
Convert to a fraction and simplify: 0.435
2 answers:
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Answer:
Slope is 2.
Step-by-step explanation:
So to find slope, we need to take the change in the y value, and the change in the x value, and then divide them. This may be confusing, so here is just 3 formulas in 3 seperate steps that we use to find it:
Step 1 -
Step 2 -
Step 3 -
So lets start by doing step one.
All we need is to look for two x values. Lets use 5 and 6:
6-5=1
So 1 is our change of x. This is our 1st step.
Next we can use 2 y values, note that these should be the 2 y values that go wiht the x values above. So this means we have to use -3 and -1:
-1-(-3) = 2
So 2 is our change in y. This is our 2nd step.
Now lets plug this into:
:
So our slope is 2. Completing our 3rd and final step.
Hope this helps!