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tangare [24]
4 years ago
14

PLEASE HELP ASAP 15 BRAINLY POINTS

Mathematics
2 answers:
rewona [7]4 years ago
8 0

1) b

2) no

3) c

4) a

emmainna [20.7K]4 years ago
6 0

1.) The answer is (B) No, because direct variation is written as y = kx, but the problem was not written that way.

2.) Answer: Yes; if you write x = ky, you will find that each x value given multiplied by a common k equals a corresponding y value.

3.) Answer: No; each x value does not multiply by a constant k to get the y values.

4.) Answer: Yes; each x value multiplies by 2.2 to get each corresponding y value.

5.) Answer: B; this is the only one that isn't or can't be written in y = kx form.

6.) Answer: Yes & -3; y + 3x = 0 can be written as y = -3x, which is a direct variation equation. The constant is just the -3.

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3 years ago
Contains the point (-1, 2) and is parallel to<br> x – 2y = -3
ivanzaharov [21]

Answer:

see explanation

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 )

Rearrange x - 2y = - 3 into this form

Subtract x from both sides

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y = \frac{1}{2} x + \frac{3}{2} ← in slope- intercept form

with m = \frac{1}{2}

• Parallel lines have equal slopes, thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute (- 1, 2) into the partial equation

2 = - \frac{1}{2} + c ⇒ c = 2 + \frac{1}{2} = \frac{5}{2}

y = \frac{1}{2} x + \frac{5}{2} ← in slope- intercept form

Multiply through by 2

2y = x + 5 ( subtract 2y from both sides )

0 = x - 2y + 5 ( subtract 5 from both sides )

- 5 = x - 2y, thus

x - 2y = - 5 ← in standard form

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4 years ago
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