Question #f7c1b

1 Answer
Subha
Oct 18, 2017

2

Explanation:

The graphical concept of x- and y-intercepts is pretty simple. The x-intercepts are where the graph crosses the x-axis, and the y-intercepts are where the graph crosses the y-axis.

#y = -4 +2*x#
#=> 2*x +(-1)*y =4#
#=> x/2 +(-1/4)*y = 1#
Which is in the form #x/a+y/b =1#
Hence, X intercept of the line is 2 unit

Alternative Solution

As said before,The x-intercepts are where the graph crosses the x-axis. Now where the graph crosses or interest X axis , the Y co-ordinate of the point is "zero"
So, we can find the X intercept by putting #Y =0# In the equation.

#y = -4 +2*x#
#=> 2*x -4 =0#
#=> x = 4/2 = 2#

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