Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
7*x-6*y-(-15)=0
Step by step solution :
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Step 1 :
Equation of a Straight Line
1.1 Solve 7x-6y+15 = 0
Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes x tells us how far along m is the Slope or Gradient i.e. how steep the line is b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 7x-6y+15 = 0 and calculate its properties
Graph of a Straight Line :
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 5/2 so this line "cuts" the y axis at y= 2.50000
When y = 0 the value of x is -15/7 Our line therefore "cuts" the x axis at x=-2.14286
x-intercept = -15/7 = -2.14286 Calculate the Slope :
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 2.500 and for x=2.000, the value of y is 4.833. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 4.833 - 2.500 = 2.333 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 2.333/2.000 = 1.167 Geometric figure: Straight Line
Kropot72 kropot72 3 years ago This can be solved by using a standard normal distribution table. The z-score for 34 pounds is 1, the reason being that 34 is one standard deviation above the mean of 28 pounds. Can use the table to find the cumulative probability for z = 1.00 and post the result? If you do this we can do the next simple steps.
