Solving for t: XY-Plan & Line T Intersects at (t, t+1)

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In summary, line t in the xy-plane is perpendicular to the line 4x+y=k, passing through the origin and intersecting at the point (t, t+1). The value of t can be found by determining the x and y solutions for the intersection of the two lines as functions of k, and then solving for the value of k that satisfies y(k) - x(k) = 1. This can be done by either plugging in values or solving algebraically. This question is typically given in 8th or 9th grade and is not typically seen on the SAT until junior year.
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linhy
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in the xy-plan, line t passes through the origin and is perpendicular to the line 4x+y= k, where k is a constant. If the two lines intersect at the point (t, t+1). WHat is the value of t?

What is t, and t+1?

I know that y= -4x +k
and perpendicular to that would be y=(1/4)x+k

but where should i go from there?
 
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  • #2
The perpendicular is y = (1/4)x, not (1/4)x + k. Find the x solution for the intersection as a function of k i.e. x = x(k). Same with the y solution y = y(k). Then find what k satisfies y(k) - x(k) = 1. Then evaluate x(k) to get t.
 
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  • #3
this is a multiple choice, it would probably quicker to plug and chug depending on how fast you're to do that
 
  • #4
this is an 8th grade or 9th grade question. sat's are not given until junior year.
 

Related to Solving for t: XY-Plan & Line T Intersects at (t, t+1)

What is the purpose of solving for t in the XY-Plan and Line T Intersects at (t, t+1)?

The purpose of solving for t in this scenario is to find the specific value or values of t where the line and the XY-plane intersect. This can help determine the coordinates of the point of intersection and can be useful in solving equations and graphing functions.

What is the process for solving for t in this scenario?

The process for solving for t involves setting the equations for the line and the XY-plane equal to each other and solving for t. This can be done by using substitution or elimination methods, depending on the equations given. Once the value of t is found, it can be substituted back into either equation to find the coordinates of the point of intersection.

What does it mean if there are multiple values of t that satisfy the equations?

If there are multiple values of t that satisfy the equations, it means that the line and the XY-plane intersect at more than one point. This can happen if the line is parallel to the XY-plane or if the equations represent different lines that intersect at different points.

How can solving for t be applied in real-world situations?

Solving for t can be applied in various real-world situations, such as determining the time and location of a moving object, finding the intersection point of two roads, or calculating the solution to a system of equations. It is a useful skill in many fields, including physics, engineering, and mathematics.

Are there any limitations or restrictions when solving for t in this scenario?

There may be limitations or restrictions when solving for t, depending on the given equations and the context of the problem. For instance, the equations may not have a real solution, or they may have an infinite number of solutions. In some cases, the equations may need to be rearranged or manipulated before solving for t. It is important to carefully analyze the equations and the problem at hand to determine the best approach for solving for t.

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