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*xy=−4+2⋅x
=> 2*x +(-1)*y =4⇒2⋅x+(−1)⋅y=4
=> x/2 +(-1/4)*y = 1⇒x2+(−14)⋅y=1
Which is in the form x/a+y/b =1xa+yb=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 =0Y=0 In the equation.

y = -4 +2*xy=−4+2⋅x
=> 2*x -4 =0⇒2⋅x−4=0
=> x = 4/2 = 2⇒x=42=2

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