Geometric figure: Straight Line
Slope = 0.500/2.000 = 0.250 x-intercept = -18/1 = -18.00000 y-intercept = 18/4 = 9/2 = 4.50000Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
x-4*y-(-18)=0
Step by step solution :Skip Ad
Step 1 :Equation of a Straight Line
1.1 Solve x-4y+18 = 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 x-4y+18 = 0 and calculate its properties
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 9/2 so this line "cuts" the y axis at y= 4.50000
y-intercept = 18/4 = 9/2 = 4.50000 Calculate the X-Intercept :
When y = 0 the value of x is -18/1 Our line therefore "cuts" the x axis at x=-18.00000
x-intercept = -18/1 = -18.00000 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 4.500 and for x=2.000, the value of y is 5.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 5.000 - 4.500 = 0.500 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 0.500/2.000 = 0.250 Geometric figure: Straight Line
Slope = 0.500/2.000 = 0.250 x-intercept = -18/1 = -18.00000 y-intercept = 18/4 = 9/2 = 4.50000
