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Aleonysh [2.5K]
2 years ago
10

What is the equation of this line in slope-intercept form? A. y=-4x+1 B. y=-1/4x+1 C. y=4x-1 D. y=4x+1. ​

Mathematics
1 answer:
Taya2010 [7]2 years ago
3 0

Answer:

A (y= -4x+1)

Step-by-step explanation:

The ‘+1’ in the answer represents the point at which the line cuts the y axis (it crosses the y axis at +1)

The -4x comes from finding the gradient of the line which is done by using the formula (y2-y1)/(x2-x1) which will give you -4

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which ordered pairs are a solution to the equation? y=2×-3 select all that apply (4,2) (1,-1) (-1,-7) (2,1)​
kirill [66]

To check if a point, such as (1, -1), is on your line, you can either sub in both the x and y values of each point into your line's equation, or one and check if the other matches up with your point.

For example, the x value of (1, -1) is 1, and the y value is -1. Sub these points into your equation:

y = 2x - 3 Original equation

(-1) = 2(1) - 3 Sub in points

-1 = 2 - 3

-1 = -1 Sides equal, therefore point is on line

If a point is NOT on the line:

y = 2x - 3 Original equation

(2) = 2(4) - 3 Sub in points

2 = 8 - 3

2 = 5 Sides do NOT equal, point is NOT on line, NOT a solution

3 0
3 years ago
-3x-4k=3, solve for x
harkovskaia [24]

-3x = 3 + 4k

x = - 3 + 4k/3

x = -(1 +4k/3)

x = -1 - 4k/3

4 0
3 years ago
Lashonda received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.31 per pound. After buying
Salsk061 [2.6K]

90 - 53.45 = 36.55

36.55 / 7.31 = 5 pounds of coffee

7 0
2 years ago
Please help, whoever gets it right I will mark brainliest.
Pepsi [2]

Answer:

One and Four

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Please help, answer must be in fraction form if possible
yuradex [85]

Answer:

28.875 or 28 7/8

Step-by-step explanation:

pls mark brainliest!

steps:

(23+1/2) + (15+1/8) - (9+3/4) then solve

46+1 over 2 + 120+1 over 8 - 36+3 over 4

solve

47/2 + 121/8 - 39/4

solve

188+121-78 over 8 = 231/8

convert 231/8= 28 7/8

5 0
2 years ago
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