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no, not all lines cross each other.
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Answer #2:
Yes, UNLESS the line is parallel to the x-axis. That's
any line with a slope of zero. Its equation is . . .
Y = any number, except zero . If that's NOT the equation of the line, then the line
crosses the x-axis.
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How do you write equations from graphs?
Assuming the graph is linear, all equations will follow the formula y = mx + c, where "mx" represents the gradient of the line; "c" is the y-intercept i.e. where the graph crosses the y-axis.
What are the linear systems?
A "system" of equations is a set or collection of equations that you deal with all together at once. Linear equations (ones that graph as straight lines) are simpler than non-linear equations, and the simplest linear system is one with two equations and two variables.
Is linear algebra and linear equations the same?
Linear Algebra is a branch of mathematics that enables you to solve many linear equations at the same time. For example, if you had 15 lines (linear equations) and wanted to know if there was a point where they all intersected, you would use Linear Algebra to solve that question. Linear Algebra uses matrices to solve these large systems of equations.
Must solutions to systems of linear equalities satisfy both equalities?
Any solution to a system of linear equations must satisfy all te equations in that system. Otherwise it is a solution to AN equation but not to the system of equations.
How are tables and graphs like equations?
They all show the values for a set of variables for different situations or outcomes.
