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kykrilka [37]
3 years ago
7

Can someone explain and answer

Mathematics
2 answers:
Gwar [14]3 years ago
7 0
The answer is D. y = -2x + 20. This is because it has a negative slope (-2x). When a number in a slope-intercept equation has the variable (x), that determines the positive or negative association. If it is a positive slope, it travels up from left to right. If it is a negative slope, it travels down from left to right.
nirvana33 [79]3 years ago
7 0

Answer:

D. y = -2x + 20

Step-by-step explanation:

first, plot these points on a linear graph.

work down from the top:

A. y = 2x <u>+ 5</u>

look at the last number first, this means the line will cross over the y axis (vertical line) at + 5. draw a point on + 5

y = <u>2x</u> + 5

From this point (+5), the 2x means that for every 1 square you move across (to the right), you will go up 2. This will make the second point of the line. connect the dots. (see picture 1 below)

B. y = 2x <u>- 6</u>

the last number means the first point will be on -6 on the y axis.

y = <u>2x</u> - 6

the 2x means that every 1 square you go across (to the right) from that point, you will move up 2

C. y = 2x

as there is no second number, this line will cross through the center of the graph. the 2 means that for every 1 square you move across from that point, you will move up 2

D. y = -2x <u>+ 20</u>

the +20 means this line will cross the y axis and + 20, the -2 means that for every 1 square you move across to the right, you move <u>DOWN</u> 2.

this is the only line that moves down from left to right

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