Why is x=4 a vertical line?

Answer by  Bob64 (87)

When drawn on an x and y axis graph, each point on a line represents the place where an x and y value meet. x=4 means that, no matter what any value of y, the x value will always be 4. Every y value on the line meets the matching x value at 4, resulting in a vertical line.

Answer by  Anonymous

if the value of x=4 no matter what the value of y is the value of x will be always 4

Answer by  bentham (159)

There can be many values for y but only one value for x. Taking some graph paper, plot the points (x=4,y=0), (x=4,y=1), (x=4,y=2), and look at the direction that the line is going. The line should be vertical and this is because all values of y map to a single x.

Answer by  Anonymous

because it doesnt intercept (go through) the y axis so the equation only has x=? it only goes through the x axis therefore it is vertical

Answer by  Anonymous

it will be vertical because it doesn't have a change in the y intercept so it will always go up one over none.

Answer by  Anonymous

find the slope of f(x) = -2 x -4

Answer by  evystoy59 (4)

f(x)=3x +4 x 2-5 x = 5y 4=-4y