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guapka [62]
3 years ago
11

BRAINLIEST!!!!

Mathematics
2 answers:
kodGreya [7K]3 years ago
5 0

I am not 100% on the correct answer but I can tell you that is is NOT

3.Kwame’s explanation and solution are incorrect. When reflecting over the x- and y-axes, he negated the incorrect coordinate in the ordered pair.

4.Kwame’s explanation and solution are incorrect. The coordinates of the rotated figure should be switched and negated, not just negated.

mote1985 [20]3 years ago
5 0

Answer:

2. Kwame’s explanation and solution are incorrect. He reflected the pre-image at step 3, rather than the figure from step 2.

Step-by-step explanation:

We are given that,

The actual transformations of the co-ordinates (1,2), (1,4) and (2,3) as,

Co-ordinates           x-axis              y-axis               180°

(1,2)                           (1,-2)               (-1,-2)               (-1,-2)

(1,4)                           (1,-4)                 (-1,-4)             (-1,-4)

(2,3)                          (2,-3)                (-2,-3)              (-2,-3)

But, in step 3, we see that,

The reflected co-ordinates from step 2 are (-1,2), (-1,4) and (-2,3).

Which is not the same as the actual co-ordinates in the 2nd column above.

Moreover, we have that,

Reflecting the original co-ordinates across the y-axis gives the result in step 3.

Hence, the best explanation for his solution is,

2. Kwame’s explanation and solution are incorrect. He reflected the pre-image at step 3, rather than the figure from step 2.

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Step-by-step explanation:

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2 years ago
Please I need help!
Monica [59]

Answer:

1)

\text{ Slope = -3}

2)

y+4=-\frac{7}{8}(x-7)

3)

y=-\frac{7}{8}x+\frac{17}{8}

Step-by-step explanation:

We want to write the equation of the line that passes through the points (7, -4) and (-1, 3) first in point-slope form and then in slope-intercept form.

1)

First and foremost, we will need to find the slope of the line. So, we can use the slope-formula:

m=\frac{y_2-y_1}{x_2-x_1}

Let (7, -4) be (x₁, y₁) and let (-1, 3) be (x₂, y₂). Substitute them into our slope formula. This yields:

m=\frac{3-(-4)}{-1-7}

Subtract. So, our slope is:

m=\frac{7}{-8}=-7/8

2)

Now, let's use the point-slope form:

y-y_1=m(x-x_1)

We will substitute -7/8 for our slope m. We will also use the point (7, -4) and this will be our (x₁, y₁). So, substituting these values yield:

y-(-4)=-\frac{7}{8}(x-7)

Simplify. So, our point-slope equation is:

y+4=-\frac{7}{8}(x-7)

3)

Finally, we want to convert this into slope-intercept form. So, let's solve for our y.

On the right, distribute:

y+4=-\frac{7}{8}x+\frac{49}{8}

Subtract 4 from both sides. Note that we can write 4 using a common denominator of 8, so 4 is 32/8. This yields:

y=-\frac{7}{8}x+\frac{49}{8}-\frac{32}{8}

Subtract. So, our slope-intercept equation is:

y=-\frac{7}{8}x+\frac{17}{8}

And we're done!

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3 years ago
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