SOLUTION: Find an equation in standard form of the line described. has x-intercept 4 and y-intercept -8 Ch.3

Question 92559: Find an equation in standard form of the line described.
has x-intercept 4 and y-intercept -8
Ch.3

Answer by chitra(359) (Show Source): You can put this solution on YOUR website!
The given data is:

x-intercept 4 and y-intercept -8

This can be written as:

x - intercept is - (4, 0)

y - intercept is - (0, -8)

The general equation of the line in the slope -intercept form is given by: y = mx + b

So substituing these points in the given equationwe get:
(4,0) ==> 0 = 4m + c

==> c = -4m

(0, -8) ==> -8 = 0 + c

==> c = -8

substituing this in the above equation, we get

-8 = -4m

==> 8 = 4m

==> m = 2

so substituing this in the eqn of the st line, we get:

y = mx + b

y = 2x - 8

Hence, the solution.

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