Answer:
<u>y = 5</u>
Step-by-step explanation:
The standard form of a linear equation is Ax + By=C
But let's start with the slope-intercept form: y = mx+b, where m is the slope and b the y-intercept (the value of y when x=0).
M, the slope, may be calculated by using the Rise/Run between the two given points: (1,5) and (3,5):
Rise = (5-5) = 0 <u><em>[Note that the value of y does not change when x = 1 or 3.]</em></u>
Run is = (3-1)=2
Rise/Run (slope, m) is (0/2) or 0. <u><em>[y does not change as a function of x. It is a flat, horizontal line]</em></u>
The equation becomes y = (2/3)x + b
We need to find a value of b, the y-intercept, that forces the line to go through both points. This can be done by entering one of the points into the equation and solving for b:
y = (0)x + b
I'll use (1,5)
5 = (0)*(1) + b
b = 5
The equation becomes y = (0)x + 5 or y = 5
Standard form of the equation is Ax + By = C
A is 0, B is 1 and C is 5
y = 5
