Answer for brainliest Which is an equation of the line through (-1, -4) and parallel to 3x+y=5
a) y= 3x + 1
b) y= -3x - 7
c) y= -3x + 7
d) y= 3x - 1

B

Step-by-step explanation:

Rearrange 3x+y=5 to y = -3x + 5 to see the gradient is -3. If they are parallel the gradient must be the same, so it is either b or c.

We check B to see if it passes through (-1, -4) by substituting in -1 for x:

-3(-1)-7 = 3 - 7 = -4, the y value, so it is B.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: