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amm1812
2 years ago
7

How do you the equation of the line that passes through point (-3,2) and is parallel to the line formed by the equation y = 4x +

7?
need it urgently please , thanks​
Mathematics
2 answers:
Keith_Richards [23]2 years ago
7 0

Answer:

\boldsymbol{y=4x+14}

Step-by-step explanation:

Hi student! Let me help you out on this question.

________

- - - - - - - - - - - - - - - - -

                                          <em>    ↪</em>

<h3>PART 1</h3>

First of all we need to find, the slope of the line that is parallel to the line \boldsymbol{y=4x+7}. Which is pretty easy, considering the fact that the slopes of parallel lines are the same.

The slope of the line \boldsymbol{y=4x+7} is \boldsymbol 4.

Which means the slope of the line that is parallel to the one above is also 4.

- - - - - - - - - - - - - - - - -

                                                <em>  ↪</em>

<h3>PART 2</h3>

Now we should find the equation of the line. We know that its slope is 4, so let's stick in 4 for the slope into the slope-intercept form equation:

(remember, m denotes the slope and b denotes the y intercept).

\boldsymbol{y=mx+b}

Stick in 4 for the slope.

\boldsymbol{y=4x+b}

Note that we are also given a point that's on the line.

We can stick in its y-co-ordinate, 2. for y.

\boldsymbol{2=4x+b}

Now let's stick in -3 for x.

\boldsymbol{2=4(-3)+b}

Solve for b.

\boldsymbol{2=-12+b}

Add 12 to both sides.

\boldsymbol{2+12=b}

\boldsymbol{14=b}

                                              <em>  ↪</em>

Now that we know the y-intercept, let's stick it into the slope-intercept form equation for b:

\boldsymbol{y=4x+14}. Which is our final answer, the equation.

⇨Hope that this helped you out! Have a nice day ahead.⇦

Best Wishes!

\star\bigstar\boldsymbol{Reach\:far.\:Aim\:high.\:Dream \ big.}}\bigstar\star

<em>◆◈-Greetings!-◆◈</em>

- - - - - - - - - - - - - - - - - -

_____________

hjlf2 years ago
3 0

Answer:

y = 4x + 14

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 4x + 7 ← is in slope- intercept form

with slope m = 4

• Parallel lines have equal slopes , then

y = 4x + c ← is the partial equation

to find c substitute (- 3, 2 ) into the partial equation

2 = - 12 + c ⇒ c = 2 + 12 = 14

y = 4x + 14 ← equation of parallel line

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