Please guys help please
1 answer:
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To round off a given number in decimals to one decimal place (1 dp), we simply take the figure right after the decimal and approximate the remaining after it. If the second number after the decimal is a significant number (5 and above) we make it 1 and add to the number right after the decimal. If its NOT a significant number, we simply disregard it. The solutions therefore are;
ANSWER:
Notice how the number in (1) becomes 0.7, after taking the next number (which is 9) and adding it as 1 to the number after the decimal (which is 6). The same applies to the number in (3).
Step-by-step explanation:
How you find the slope of a straight line, depends on what information you are given. Here are some pieces of information you might be given and how to find the slope in each:
<u>two random points</u>
* Use the formula for slope and substitute each of the x and y values.
Ex: given points (1,2) and (3,4)
<u>picture of the graph</u>
* You can choose two random points on the graph and do <u>two random points</u> method
* OR you can use another formula for slope: m = rise/run
First, choose two random points on the graph that are on the grid lines. Count distance between first and second point. (The first point being on the left side.)
- Count how far away the two points are vertically. This number is "rise". If the second point is under the first point, the rise is a negative number.
- Count how far away they are horizontally. This is the "run". This number will not be negative.
Divide the number for rise by the number for run to get the slope.
<u>random point and the y-intercept</u>
* Use slope-intercept form and substitute the random point and the y-intercept
y = mx + b
Substitute the y-coordinate of the point for y, the x-coordinate of the point for x, and the y-intercept for b.
Isolate m to find the slope.
Ex: given (2,1) and y-intercept (0, 0)
y = mx + b
1 = m2 + 0
1 = 2m
m = 1/2