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Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Select two options.

y = –3/4x + 1

3x − 4y = −4

4x − 3y = −3

y – 2 = –3/4(x – 4)

y + 2 = 3/4(x + 4)

User Ejohnson
by
4.9k points

1 Answer

3 votes

Answer:

y+2=3/4(x+4) and 3x-4y=-4

Explanation:

The equation given is in standard form right now. Let's change it to slope intercept form to make it easier

3x-4y=7

subtract 3x from both sides

-4y=-3x+7

divide by -4

y=3/4x-7/4

Parallel Lines have the same slope, but a different y intercept.

We know so far:

slope is 3/4

point is (-4,-2)

Let's plug it into slope point form (y-y1=m(x-x1) (m is slope), looking at your options

y--2=3/4(x--4)

or

y+2=3/4(x+4)

One option down!

We can simplify the equation

y+2=3/4(x+4)

multiply by 3/4

y+2=3/4x+3

subtract 2

y=3/4x+1

Looks like there aren't any options, so let's turn it back into standard form

Subtract 1 from both sides

y-1=3/4x

subtract y from both sides

-1=3/4x-y

multiply everything by 4 to clear the fraction (standard form can't have any fractions or decimals)

-4=3x-4y

flip it so it's

3x-4y=-4

Hope this helps!

User Smegger
by
5.0k points