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Use the graph to solve -3/2x - 2 = -4x 3

User Alexsalo
by
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1 Answer

4 votes

Setting the equations equal:
\(-(3)/(2)x - 2 = -4x + 3\). After solving,
\(x = 2\). Substituting into either equation gives \(y = -5\). The point of intersection is
\((2, -5)\).

To solve for the point of intersection between the lines
\(y = -(3)/(2)x - 2\) and
\(y = -4x + 3\) , we'll equate the two equations and solve for
\(x\):


\(-(3)/(2)x - 2 = -4x + 3\)

First, let's eliminate the fractions by multiplying all terms by 2 to get rid of the denominator:

let's gather the
\(x\) terms on one side by adding
\(8x\) to both sides:


\(5x - 4 = 6\)

Now, isolate the
\(x\) term by adding 4 to both sides:


\(5x = 10\)

Finally, solve for
\(x\) by dividing both sides by 5:


\(x = 2\)

Now that we have
\(x = 2\) let's find the corresponding \(y\) value using one of the original equations. We'll use
\(y = -(3)/(2)x - 2\):


\(y = -(3)/(2)(2) - 2\)


\(y = -3 - 2\)


\(y = -5\)

Therefore, the point of intersection occurs at
\(x = 2\) and
\(y = -5\), which gives us the coordinates of the intersection point as
\((2, -5)\).

complete the question

"Two lines,
\(y = -(3)/(2)x - 2\) and
\(y = -4x + 3\), intersect at a point. What are the coordinates of this point of intersection? Illustrate your answer graphically to show how you arrived at the solution."

Use the graph to solve -3/2x - 2 = -4x 3-example-1
User Henry Pham
by
8.0k points