Problem 1
Plot 3 or 4 of the given points. For example, plot (4,16) and one other point given in the table. Draw a straight line through your points. Look carefully: Where does your line cross the y-axis? If y = 14 (just an example, not the correct value), then the y-intercept is (0,14).
To find the slope of your line, choose any 2 of the given 4 points. Find the slope of the line segment connecting those 2 points. For example:
24 - 16 8
m = ------------- = -------- = 2. The slope of this line is m=2.
8 - 4 4
Now you have both the slope (2) and the y-intercept (b). The equation of this line is thus
y = 2x + b (you found b earlier).
the answer is 200000 in simplified form and in scientific form its 2 times 10^5
Answer:
.............,................a is the ans
Answer:
21.25 m
Step-by-step explanation:
y = Ax² + Bx + C
Set the origin at the middle of the span so that the point (0, 0) is on the curve
0 = A(0)² + B(0) + C means C = 0
The points (200, 85) and (-200, 85) are on the curve
85 = A(200)² + B(200)
85 = A(-200)² + B(-200)
85 - 40000A - B(200) = 85 - 40000A + B(200)
- B(200) = B(200)
-400B = 0
B = 0
85 = A(200)²
A = 85/40000
y = 85x²/40000
y = 85(100)²/40000 = 21.25 m
