PLSSSSS HELP ME!!! 80 Points!!
2 answers:
Answer: <em> (-1; 3)</em>
Step-by-step explanation:
<em>y = -x + 2</em>
<em>y = 4x + 7</em>
<em />
<em>4x + 7 = -x + 2</em>
<em>4x + 7 + x - 7 = - x + 2 + x - 7</em>
<em>5x = - 5</em>
<em>x = - 1</em>
<em />
<em>y = 4(-1) + 7</em>
<em>y = 3</em>
<em>Intersection point: (-1; 3)</em>
<u><em>See the solution on the photo</em></u>
Answer:
y=−x+2y=4x+7 NO
y=−x+2 YES
y=4x+7
Multiply the first equation by 4, obtaining: 4y = -4x + 8
Add the 2nd equation to this result: y = 4x + 7
--------------------
5y = 15, and y = 3
Then, using the first equation, determine x:
y = 3 = -x + 2
1 = -x, so x = -1
The solution is (-1, 3)
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