Respuesta :
Answer:
C.118
Step-by-step explanation:
100 + 9x = y ...(1)
x = 2 (Given)
Now,
Put the value of x in equation (1). we get,
100 + 9(2) = y
100 + 18 = y
118 = y
y = 118
Thus, the value of y is 118
Answer:
Slope = 9
x-intercept = -100/9 = -11.11111
y-intercept = 100/1 = 100.00000
Step-by-step explanation:
Step 1 :
Equation of a Straight Line
1.1 Solve 9x-y+100 = 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 9x-y+100 = 0 and calculate its properties
Graph of a Straight Line :
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 100/1 so this line "cuts" the y axis at y=100.00000
y-intercept = 100/1 = 100.00000
Calculate the X-Intercept :
When y = 0 the value of x is -100/9 Our line therefore "cuts" the x axis at x=-11.11111
x-intercept = -100/9 = -11.11111
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 100.000 and for x=2.000, the value of y is 118.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 118.000 - 100.000 = 18.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 9
Hope this helps.
