Remember, an=a1(r)^(n-1) where a1=first term or where n=1 and r=commmon ratio
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a2/a1=r
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so if you have the graph, find the y value coresponding to x=1 and that is a1
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find the y value coresponding to x=2 and taht is a2, do a2/a1 to get r
so like I was saying
well, each term is 1/2 of the previous
20/40=1/2
so r=1/2
and a1=40
so
is da equation
Answer:
Your answer would be -4x^2+147/5
If two lines are perpendicular, then their slopes have a product of -1 or you could say they are opposite signed reciprocals of each other.
The given equation has a slope of -3. We know this because it is in slope-intercept form y = mx + b ...y = (slope)x + (y-intercept).
so taking the slope -3...the opposite signed reciprocal would be +
Now we have a slope and a point... we can use them to find the b (y-intercept)
x = 4, y = 3, and m =
Using the common denominator fraction for 3, we subtract 4/3 from both sides
plug the values for m and b into the slope intercept form
