To check this, you substitute the values for x and y into the equation. At (1,2) x equals 1 and y equals 2 so substituting this in we get:
x + 2y = 1 + 2(2) = 1 + 4 = 5
And since it equals 5 like in the original equation the point is represented by it.
q2
-4
in the equation: y=mx+b , the y-intercept is represented by "b".
(4, 1)
The second
yes
The equation "x plus 2y equals 5" is: x + 2y = 5 2y = 5 - x y = 5/2 - 1/2x y = -1/2x + 5/2
q2
-4
5 and the y intercept is 2
in the equation: y=mx+b , the y-intercept is represented by "b".
(4, 1)
Yes it is, since it can be represented in the form y = mx + b
The second
Line of symmetry: x = 3
Point slope equation: Y=3X+12
It's the equation of a straight line. Every point on the line is a solution to the equation. There are an infinite number of them.