This should help you on how to get the zeros and the answer for the bottom question is A
Write the equation of a secant line? Screenshot of the question is attached
1 answer:
Answer:
y = 12x - 13
Step-by-step explanation:
The two points you want the line through are ...
... (-4, h(-4)) = (-4, -61)
and
... (2, h(2)) = (2, 11)
The 2-point form of the equation of a line is applicable. For (x1, y1) and (x2, y2), the equation is
... y = (y2-y1)/(x2-x1)·(x-x1) +y1
... y = (-61-11)/(-4-2)·(x -2) + 11 . . . . putting in the point values
... y = 12(x -2) + 11 . . . . . . . . . . . . . simplify
... y = 12x -13 . . . . . . . . . . . . . . . . . eliminate parentheses, collect terms
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Answer:
Option 3. 71 ft. is the distance between B and top of the hill.
Step-by-step explanation:
Let the height of the hill is h ft and the distance of A from the hill be x ft and distance from B to hill is y.
It is given distance between A and B is 45 ft. ∠BAO = 65° and ∠ABO = 80°.
We have to find the distance of B from the top of the hill.
Now from ΔACO
From ΔBCO
h = 5.67x
Now h = 5.67x = 2.14(45-x)
5.67x = 96.3 - 2.14x
2.14x + 5.67x = 96.3
7.81x = 96.3
x = 96.3/7.81 = 12.33 ft
Therefore
Therefore 71 ft is the distance between B and the top of the hill.
Answer:
slope = 2
Step-by-step explanation:
Find 2 points on the line that land perfectly on the grid. I'll choose these 2 here:
(-2, -1) and (0, 3)
Rise is the change in the y value from one point to the other, and run is the change in the x. Looking at these 2 points, y went from -1 to 3. That is a <em>rise</em> of 4. The x went from -2 to 0, so that is a <em>run</em> of 2. "rise over run" means rise literally over run in a fraction like this:
The more proper way to calculate slope looks like this, but it's really the same thing in the end:
where (x1, y1) and (x2, y2) are your 2 points.
Finally, the slope of this line is:
That's a rise of 4 over a run of 2, and that simplifies to just a slope of 2.