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7nadin3 [17]
3 years ago
7

Passes through (-4, 2 ) and parallel to y = 1/2x + 5

Mathematics
2 answers:
lord [1]3 years ago
7 0

Answer:

y = 1/2x + 4

Step-by-step explanation:

Lines that are parallel have the same gradient....in which its 1/2

Equation of the line that is parallel to y = 1/2x + 5 and passes through (-4,2)

(y - 2) = 1/2(x + 4)

2(y - 2) = x + 4

; 2y - 4 = x + 4

Equation of the line,

y = 1/2x + 4

kirill115 [55]3 years ago
3 0

Answer:

\large\boxed{y=\dfrac{1}{2}x+4}

Step-by-step explanation:

\text{Let}\ k:y=m_1x+b_1,\ l:y=m_2x+b_2\\\\l\ \parallel\ k\iff m_1=m_2\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\===========================\\\\\text{We have}\ k:y=\dfrac{1}{2}x+5\to m_1=\dfrac{1}{2}\\\\\text{Let}\ l:y=m_2x+b.\\\\l\ \parallel\ k\iff m_2=m_1\to m_2=\dfrac{1}{2}.\\\\l:y=\dfrac{1}{2}x+b\\\\\text{Put the coordinates of the given point (-4, 2) to the equation of a line:}\\\\2=\dfrac{1}{2}(-4)+b\\\\2=-2+b\qquad\text{add 2 to both sides}\\\\4=b\to b=4\\\\\text{Finally:}\\\\y=\dfrac{1}{2}x+4

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