We have been given coordinate of a point (4,7). We are asked to find the equation of the line that has an undefined slope and passes through the given point.
We know that slope of a vertical line is undefined. So the vertical line passing through point (4,7) will have an undefined slope.
The slope of line will be undefined when x-coordinates of all points on the line are equal.
Since the line will have same x-coordinates for all y-coordinates, therefore, option B is the correct choice.
VUX : vertical line, undefined slope, represented by x = a number HOY : horizontal line, 0 slope, represented by y = a number
so we need an undefined slope.....that means it is a vertical line.....it is represented by x = a number......and that number is the one in the x position...so ur equation is : x = 4 (because (4,7)...the x digit is 4
