ABC is translated 7 units to the right and 1 unit up, thon reflected across the y'axio. What are the coordinates of A after the
transformations?

1). (x, y) → [(x + 7), (y + 1)]

2). (9, 10)

3). (x, y) → (-x, y)

4). (-2, 9)

5). (-9, 10)

Step-by-step explanation:

Given: Triangle ABC is translated 7 units right and 1 unit up, then reflected across the y-axis.

Rule for the translation of A is,

(x, y) → [(x + 7), (y + 1)]

After the translation point A moves to,

(2, 9) → [(2+7), (9+1)]

        → (9, 10)

The rule for a reflection over the y-axis is,

(x, y) → (-x, y)

The coordinates of A after the reflection are,

(2, 9) → (-2, 9)

The final position of A,

(-9, 10)

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is