Find the​ point, P, at which the line intersects the plane. x equals 7 plus 9 t​, y equals 3 minus 7 t​, z equals 7 minus 5 t​; 5 x minus 6 y minus 9 z equals negative 1 \

Respuesta :

Answer:

The point of intersection [tex]P\left(\dfrac{1133}{122},\dfrac{149}{122},\dfrac{699}{122}\right)[/tex]

Step-by-step explanation:

Equation of line:

[tex]x=7+9t[/tex]

[tex]y=3-7t[/tex]

[tex]z=7-5t[/tex]

Equation of plane:

[tex]5x-6y-7z=-1[/tex]

We need to find the point of intersection of line and plane.

Point of intersection: When both line and plane meet at single point.

So, put the value of x, y and z into plane.

[tex]5(7+9t)-6(3-7t)-7(7-5t)=-1[/tex]

[tex]35+45t-18+42t-49+35t=-1[/tex]

[tex]122t=-1+32[/tex]

[tex]t=\dfrac{31}{122}[/tex]

Substitute the value of t into x, y and z

[tex]x=7+9\cdot \dfrac{31}{122}=\dfrac{1133}{122}[/tex]

[tex]y=3-7\cdot \dfrac{31}{122}=\dfrac{149}{122}[/tex]

[tex]z=7-5\cdot \dfrac{31}{122}=\dfrac{699}{122}[/tex]

Point of intersection:

[tex]\left(\dfrac{1133}{122},\dfrac{149}{122},\dfrac{699}{122}\right)[/tex]

Hence, The point of intersection [tex]P\left(\dfrac{1133}{122},\dfrac{149}{122},\dfrac{699}{122}\right)[/tex]