First you plug in the variables:
(-3)(2)+(6)(-3)(4)
Multiply:
-6+(-18)(4)
-6+-72
Add and your answer comes out to be:
-78
Answer:
x - 4y = 8
Step-by-step explanation:
Since the Point-Slope Formula is already given to you, convert it to Slope-Intercept Form, and you do that by doing this:
y - 1 = ¼(x - 12) >> y - 1 = ¼x - 3
y - 1 = ¼x - 3
+ 1 + 1
--------------
y = ¼x - 2 >> Slope-Intercept Form
After doing this, you are ready to convert to Standard Form, and you do that by doing this:
y = ¼x - 2
-¼x -¼x
-----------
-¼x + y = -2
Now unfortunately, we do not want fractions as our coefficients, so the way to eliminate the fraction is to multiply the equation by the Multiplicative Inverse of -¼, which is -4:
-4[-¼x + y = -2] >> x - 4y = 8 → New equation without fractions
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The problem asks:
what is 2y+7 when y=-3?
Since y=-3 then 2y+7=2(-3)+7=-6+7=1.
Similarly, when y=-3, -4y − 10=<span>-4(-3) − 10=12-10=2.
Answer:
</span><span>2y + 7=1
-4y − 10=2</span>
No. You have to calculate the unit rate by dividing 30 and 6 which is 5. Then 40 divided by 18 which is 2.22 repeating. since they don't equal the same thing, it is false.
Well you can use a Combination which would mean it would be 9 nCr 6, so I got 84. because the stations can't be repeated in one sequence, but order doesn't matter.
