 # Quick Answer: Under What Conditions Are Two Lines Parallel?

## What is the formula for infinitely many solutions?

An infinite solution has both sides equal.

For example, 6x + 2y – 8 = 12x +4y – 16.

If you simplify the equation using an infinite solutions formula or method, you’ll get both sides equal, hence, it is an infinite solution.

Infinite represents limitless or unboundedness..

## Will parallel lines ever meet?

In projective geometry, any pair of lines always intersects at some point, but parallel lines do not intersect in the real plane. … Every line intersects the line at infinity at some point. The point at which the parallel lines intersect depends only on the slope of the lines, not at all on their y-intercept.

## Are these lines parallel?

Parallel lines have the same slope. If you turn both equations into the y = mx+b form (the first equation is already in this form) then you can compare the “m” values. If they are the same, and the sign (pos/neg) is the same and the values of “b” are different, then the lines are parallel.

## How do you know if lines are parallel?

Two lines are parallel if the have the same slope. Example 1: Find the slope of the line parallel to the line 4x – 5y = 12. To find the slope of this line we need to get the line into slope-intercept form (y = mx + b), which means we need to solve for y: The slope of the line 4x – 5y = 12 is m = 4/5.

## How many solutions does the pair of equations y 0 and y =- 7 have?

The pair of equation y=0 & y=-7 has no solution. The equation has parallel line have no solution.

## Is 0 0 infinite or no solution?

For an answer to have an infinite solution, the two equations when you solve will equal 0=0 . … If you solve this your answer would be 0=0 this means the problem has an infinite number of solutions. For an answer to have no solution both answers would not equal each other.

## What is the condition for parallel lines Class 10?

If two lines are parallel then, they have no solution pair of linear equations is inconsistent; If two lines are coincident then, they have infinite solution and pair of linear equations is consistent; If two lines are intersecting then, they have unique solution and pair of linear equations is consistent.

## How do you know if two equations have no solution?

Summary. If the equation ends with a false statement (ex: 0=3) then you know that there’s no solution. If the equation ends with a true statement (ex: 2=2) then you know that there’s infinitely many solutions or all real numbers.

## What is the condition for no solution?

In this case, each point on the line is a solution. If there are infinitely many solutions of the given pair of linear equations, the equations are called dependent (consistent). If the lines are parallel, there is no solution for the pair of linear equations.

## What are the conditions of lines?

If two lines AB and CD of slopes m1 and m2 are perpendicular, then the angle between the lines θ is of 90°. ⇒ m1m2 = -1. Thus when two lines are perpendicular, the product of their slope is -1. If m is the slope of a line, then the slope of a line perpendicular to it is -1/m.

## What is the symbol for no solution?

When an equation has no solutions, denote it with x∈∅.

## When two lines are parallel what is the solution?

Lines in a plane that are parallel, do not intersect. Two lines are parallel if they have the same slope, or if they are vertical. If two parallel lines form a system, there are no solutions to the system. If lines intersect, the lines cross in one point.

## What is the condition for parallel lines in linear equations?

ConditionResultLines parallel to each other=>No solutions. The pair of linear equations is inconsistent.Coincident lines=>Infinite number of solutions. The pair of linear equations is consistent and dependent.1 more row

## What is condition of parallel lines?

Two lines in a plane are said to be parallel if they do not intersect, when extended infinitely in both the direction. Also, the distance between the two lines is the same throughout. The symbol for denoting parallel lines is ∥.