hawkswoopergami hawkswoopergami
  • 01-01-2018
  • Mathematics
contestada

What are the coordinates of the point where the line y = -\frac{2}{5}x + 12 intersects the x -axis?

Select one:
a. (-30,0)
b. (0,30)
c. (30,0)
d. (0,-30)

Respuesta :

TaylorBayley
TaylorBayley TaylorBayley
  • 01-01-2018
The point at which a line intersects the x axis is also the point where y=0. Therefore, we can set the equation to 0 and solve it.

[tex]y= \frac{-2}{5}x+12 \\ \frac{-2}{5}x+12=0 \\ \frac{2}{5}x=-12 \\ 2x=-60 \\ \boxed{x=-30} [/tex]
Therefore, it intersects the x axis at (-30,0)
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